Snell's Clinical Anatomy Chapter 12 - Head and Neck

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is the primary function of the scalenus muscles?

  • To flex the neck
  • To elevate the first two ribs during respiration (correct)
  • To lateral flex the shoulder
  • To rotate the head

Where does the external jugular vein primarily drain blood from?

  • The lungs
  • The brain
  • The face and neck (correct)
  • The upper limb

Which of the following nerves is NOT a part of the cervical plexus?

  • Oculomotor Nerve (CN III) (correct)
  • Cutaneous Branches
  • Accessory Nerve (CN XI)
  • Phrenic Nerve

The hyoid bone is located in which anatomical region?

<p>Neck (A)</p> Signup and view all the answers

What is the significance of anatomical triangulations in the neck?

<p>They are used to delineate areas for surgical procedures. (D)</p> Signup and view all the answers

Which of the following accurately describes the cervical plexus?

<p>It contains nerves that innervate the diaphragm. (A)</p> Signup and view all the answers

Which artery supplies blood to the hyoid bone and surrounding structures?

<p>Facial Artery (D)</p> Signup and view all the answers

Which anatomical triangle is primarily associated with the sternocleidomastoid muscle?

<p>Carotid Triangle (D)</p> Signup and view all the answers

What is the primary function of the occipitofrontalis muscle?

<p>Moves the scalp on the skull and raises eyebrows (A)</p> Signup and view all the answers

Which nerve is primarily responsible for the action of the orbicularis oculi muscle?

<p>Facial nerve (B)</p> Signup and view all the answers

Which muscle is involved in creating vertical wrinkles of the forehead?

<p>Corrugator supercilii (A)</p> Signup and view all the answers

What action does the dilator naris muscle perform?

<p>Widen nasal apertures (C)</p> Signup and view all the answers

What is the function of the procerus muscle?

<p>Creates wrinkles between the eyebrows (A)</p> Signup and view all the answers

Which muscle group is primarily involved in the movement of the first rib during respiration?

<p>Scalenus muscles (A)</p> Signup and view all the answers

What is the primary function of the external jugular vein?

<p>Drains blood from the face and neck (D)</p> Signup and view all the answers

Which structures are derived from the cervical plexus?

<p>Hypoglossal nerve and ansa cervicalis (C)</p> Signup and view all the answers

Which statement about the hyoid bone is correct?

<p>It is a floating bone in the neck (A)</p> Signup and view all the answers

What is the significance of anatomical triangulations?

<p>Defines areas of potential surgical access (C)</p> Signup and view all the answers

Which of the following muscles assist in lateral neck flexion?

<p>Sternocleidomastoid (D)</p> Signup and view all the answers

Which nerve is primarily responsible for the motor innervation of the diaphragm?

<p>Phrenic nerve (A)</p> Signup and view all the answers

What is the main role of the scalene muscles?

<p>Elevate the ribs during inhalation (B)</p> Signup and view all the answers

Which of the following is not a branch of the cervical plexus?

<p>Long thoracic nerve (C)</p> Signup and view all the answers

Which anatomical structure does the external jugular vein drain into?

<p>Subclavian vein (B)</p> Signup and view all the answers

Which of the following muscles is primarily involved in the lateral flexion of the neck?

<p>Scalenus anterior (C)</p> Signup and view all the answers

What is the primary function of the external jugular vein?

<p>Drain blood from the face and neck (B)</p> Signup and view all the answers

Which function is primarily associated with the scalenus muscles?

<p>Elevation of the first rib during respiration (A)</p> Signup and view all the answers

Which nerve is a major component of the cervical plexus?

<p>Phrenic nerve (A)</p> Signup and view all the answers

What is the primary role of the external jugular vein?

<p>Draining blood from the face and neck (B)</p> Signup and view all the answers

Which structure is primarily formed by the cervical plexus?

<p>Phrenic nerve (B)</p> Signup and view all the answers

Which structure is located superior to the hyoid bone?

<p>Mandible (C)</p> Signup and view all the answers

What anatomical feature is formed by the intersection of the sternocleidomastoid muscle and the trapezius muscle?

<p>Occipital triangle (D)</p> Signup and view all the answers

Which of the following bones is specifically recognized as the hyoid bone?

<p>A floating bone located in the neck (D)</p> Signup and view all the answers

What anatomical feature separates the major cervical triangles?

<p>Borders of the sternocleidomastoid muscle (B)</p> Signup and view all the answers

Which branch of the cervical plexus provides sensation to the skin over the anterior neck?

<p>Transverse cervical nerve (A)</p> Signup and view all the answers

Which of the following best describes the role of the anterior scalene muscle?

<p>Assisting in neck flexion and elevation of the first rib (B)</p> Signup and view all the answers

In which anatomical triangle would you find the thyroid gland?

<p>Muscular triangle (D)</p> Signup and view all the answers

The cervical plexus innervates which of the following areas?

<p>Diaphragm and neck region (C)</p> Signup and view all the answers

Which muscle is responsible for elevating the first two ribs?

<p>Scalenus medius (B)</p> Signup and view all the answers

What is the primary function of the ansa cervicalis?

<p>Supply motor innervation to infrahyoid muscles (D)</p> Signup and view all the answers

What does the term 'anatomical triangulations' refer to in the context of the neck?

<p>Divisions created by surrounding muscles and bones (A)</p> Signup and view all the answers

Which nerve primarily contributes to the innervation of the diaphragm?

<p>Phrenic nerve (B)</p> Signup and view all the answers

Which vein is responsible for draining blood from the posterior part of the head and neck?

<p>External jugular vein (D)</p> Signup and view all the answers

How is the hyoid bone positioned in relation to other bones of the body?

<p>Superior to the thyroid cartilage (A)</p> Signup and view all the answers

What is the primary role of the carotid body in the neck?

<p>Monitors blood oxygen levels (B)</p> Signup and view all the answers

Which muscles are primarily involved in the mechanism of swallowing?

<p>Pharyngeal constrictors and tongue muscles (B)</p> Signup and view all the answers

What is the function of the carotid sinus?

<p>Registers blood pressure changes (C)</p> Signup and view all the answers

What anatomical structure is primarily innervated by the vagus nerve in the head and neck?

<p>Laryngeal muscles (A)</p> Signup and view all the answers

Which of the following best describes the relationship of the ear structures to their neighboring organs?

<p>The middle ear communicates directly with the throat (C)</p> Signup and view all the answers

Which of the following arteries supplies blood to the tongue?

<p>Lingual artery (B)</p> Signup and view all the answers

What is the primary function of the intrinsic muscles of the tongue?

<p>Change the shape of the tongue (C)</p> Signup and view all the answers

Which muscle is responsible for moving the scalp and raising the eyebrows?

<p>Frontal belly (A)</p> Signup and view all the answers

What is the primary action of the corrugator supercilii muscle?

<p>Creating vertical wrinkles of the forehead (A)</p> Signup and view all the answers

Which muscle functions to compress the mobile nasal cartilages?

<p>Compressor nasi (A)</p> Signup and view all the answers

What action does the orbicularis oculi muscle perform?

<p>Winking and closing the eyelids (D)</p> Signup and view all the answers

What is the role of the procerus muscle in facial expression?

<p>Wrinkles skin between the eyebrows (D)</p> Signup and view all the answers

What may occur as a result of maxillofacial fractures?

<p>Malocclusion of teeth (C)</p> Signup and view all the answers

What is a potential complication of posterior cranial fossa fractures?

<p>Cerebrospinal fluid leakage (D)</p> Signup and view all the answers

Which cranial nerves may be damaged in fractures involving the jugular foramen?

<p>9th, 10th, and 11th cranial nerves (C)</p> Signup and view all the answers

What characterizes the swelling associated with maxillofacial fractures?

<p>Extensive facial swelling (C)</p> Signup and view all the answers

In what way can blood escape in posterior cranial fossa fractures?

<p>Into the nape of the neck (C)</p> Signup and view all the answers

What is a common result of maxillary fractures regarding the nasal cavity?

<p>Blood leaking into the nasal cavity (D)</p> Signup and view all the answers

What is a typical feature of facial bone fractures in children compared to adults?

<p>They may be incomplete or greenstick fractures (B)</p> Signup and view all the answers

Which symptom may indicate involvement of the infraorbital nerve in a facial fracture?

<p>Anesthesia of the cheek and upper gum (A)</p> Signup and view all the answers

What complication can arise from damage to the orbital wall in facial trauma?

<p>Diplopia (double vision) (B)</p> Signup and view all the answers

What are the soft spots in a newborn's skull called?

<p>Fontanelles (D)</p> Signup and view all the answers

By what age does the anterior fontanelle typically close?

<p>18 months (D)</p> Signup and view all the answers

What type of tissue connects the skull bones during infancy prior to ossification?

<p>Fibrous tissue (C)</p> Signup and view all the answers

Which fontanelle lies between the frontal bones and the parietal bones?

<p>Anterior fontanelle (C)</p> Signup and view all the answers

Which feature of the skull allows for initial growth and mobility in infants?

<p>Fontanelles (D)</p> Signup and view all the answers

Which of the following best describes the anterior fontanelle's shape?

<p>Diamond (B)</p> Signup and view all the answers

What role do the anterior and posterior fontanelles play in clinical examination?

<p>Easily examined landmarks (C)</p> Signup and view all the answers

How are the skull bones described as being connected in infants compared to adults?

<p>Loosely knit with some mobility (B)</p> Signup and view all the answers

Which of the following is NOT associated with the anterior fontanelle?

<p>Temporal bone (B)</p> Signup and view all the answers

What is the clinical significance of examining the anterior fontanelle in infants?

<p>Determining normal cranial pressure (C)</p> Signup and view all the answers

What muscle is primarily responsible for the depression of the mandible?

<p>Lateral pterygoid (A)</p> Signup and view all the answers

What results from the contraction of the digastrics, geniohyoids, and mylohyoids?

<p>Depression of the mandible (D)</p> Signup and view all the answers

Which structure limits the forward movement of the articular disc in the temporomandibular joint?

<p>Fibroelastic tissue (D)</p> Signup and view all the answers

What occurs during the dislocation of the temporomandibular joint?

<p>The head of the mandible moves beyond the summit. (C)</p> Signup and view all the answers

Which groups of muscles are primarily involved in the elevation of the mandible?

<p>Masseter and temporalis (B)</p> Signup and view all the answers

What happens when the articular disc becomes detached from its capsule?

<p>Noise during jaw movements (B)</p> Signup and view all the answers

What is an effect of a severe blow to the chin on the temporomandibular joint?

<p>Prevents backward movement of the mandible (A)</p> Signup and view all the answers

During the backward movement of the mandible, which movement occurs after the disc and head of the mandible move forward?

<p>Head of the mandible rotates on the lower surface of the disc (B)</p> Signup and view all the answers

What physical feature is observed when both heads of the mandible lie in front of the articular tubercles?

<p>Mandible is dislocated (A)</p> Signup and view all the answers

Which structure primarily functions in maintaining balance and equilibrium in the ear?

<p>Semicircular canals (B)</p> Signup and view all the answers

Which artery provides the primary vascular supply to the structures of the tongue?

<p>Lingual artery (A)</p> Signup and view all the answers

What is the main role of the parotid gland in the oral cavity?

<p>Secreting saliva to aid in digestion (D)</p> Signup and view all the answers

Which nerve is primarily responsible for motor innervation of the intrinsic muscles of the tongue?

<p>Hypoglossal nerve (C)</p> Signup and view all the answers

What is the primary function of the carotid sinus?

<p>Detecting changes in blood pressure (C)</p> Signup and view all the answers

Which structure is primarily responsible for the mechanism of swallowing?

<p>Pharynx (A)</p> Signup and view all the answers

What is the primary function of the cochlea in the ear?

<p>Converting sound vibrations into neural signals (D)</p> Signup and view all the answers

What muscle is primarily responsible for the depression of the mandible?

<p>Digastric (D)</p> Signup and view all the answers

What limits the forward movement of the articular disc in the temporomandibular joint?

<p>Fibroelastic tissue (C)</p> Signup and view all the answers

Which muscles are involved in the elevation of the mandible?

<p>Masseter and temporalis (A)</p> Signup and view all the answers

What is the consequence of the articular disc becoming detached from the capsule?

<p>Noisy movements and clicks (B)</p> Signup and view all the answers

What occurs during temporomandibular joint dislocation?

<p>Mandible and disc move forward excessively (C)</p> Signup and view all the answers

Which ligament prevents the head of the mandible from moving backward dangerously?

<p>Temporomandibular ligament (D)</p> Signup and view all the answers

What is the first action that occurs when the mandible is depressed?

<p>Articular disc moves backward (D)</p> Signup and view all the answers

Which muscles contribute significantly to pulling the mandible forward?

<p>Lateral pterygoids (B)</p> Signup and view all the answers

What happens if there is a severe blow to the chin during an open mouth position?

<p>The mandible fractures easily (C)</p> Signup and view all the answers

What characterizes the fontanelles in the skull of a newborn?

<p>They allow for mobility between skull bones. (A)</p> Signup and view all the answers

At what age does the anterior fontanelle typically ossify and close?

<p>By 18 months (C)</p> Signup and view all the answers

Which structure is positioned posteriorly in relation to the anterior fontanelle?

<p>Parietal bones (D)</p> Signup and view all the answers

What is the shape of the anterior fontanelle in a newborn?

<p>Diamond-shaped (B)</p> Signup and view all the answers

Which of the following statements about the mobility of skull bones at birth is accurate?

<p>Skull bones have limited mobility due to fibrous tissue. (C)</p> Signup and view all the answers

Which area is clinically significant for examination concerning fontanelles?

<p>Anterior and posterior fontanelles (C)</p> Signup and view all the answers

What type of tissue predominantly connects the skull bones in infants?

<p>Fibrous tissue or cartilage (B)</p> Signup and view all the answers

What is a key characteristic of the bregmatic fontanelle?

<p>It is the largest fontanelle in infants. (B)</p> Signup and view all the answers

Which of the following best describes the position of the maxillary artery in relation to the structure of the skull?

<p>Medially next to the auriculotemporal nerve (D)</p> Signup and view all the answers

What anatomical feature is specifically designed to allow for movement in a newborn's skull?

<p>Fontanelles (B)</p> Signup and view all the answers

What function do the frontal bellies of the occipitofrontalis serve?

<p>They raise the eyebrows. (C)</p> Signup and view all the answers

Which nerve supplies the skin over the temporal region?

<p>Auriculotemporal nerve. (A)</p> Signup and view all the answers

Which nerve ascends along the posterior edge of the sternocleidomastoid muscle?

<p>Lesser occipital nerve. (B)</p> Signup and view all the answers

What is the primary arterial supply to the scalp?

<p>Temporal arteries. (D)</p> Signup and view all the answers

Which structure does the greater occipital nerve primarily supply?

<p>Scalp as far as the vertex. (B)</p> Signup and view all the answers

Which of the following nerves winds around the superior orbital margin?

<p>Supraorbital nerve. (D)</p> Signup and view all the answers

What anatomical feature separates the scalp from the periosteum?

<p>Loose areolar tissue (C)</p> Signup and view all the answers

What is the significance of the rich blood supply to the scalp?

<p>It ensures meticulous healing of cuts. (D)</p> Signup and view all the answers

What area of the scalp does the auriculotemporal nerve specifically target?

<p>Skin over the temporal region. (A)</p> Signup and view all the answers

Which of the following is a common issue in the sebaceous glands of the scalp?

<p>Infection (A)</p> Signup and view all the answers

What causes a scalp wound to resemble a lacerated wound?

<p>Trauma from blunt objects (B), Pull of the epicranial muscles (D)</p> Signup and view all the answers

Which muscle is involved in facial expression and is located superior to the zygomaticus major?

<p>Levator labii superioris. (D)</p> Signup and view all the answers

Which group of nerves is primarily located anterior to the ear?

<p>Branches of the mandibular division of the trigeminal nerve. (D)</p> Signup and view all the answers

Where do the arteries supplying the scalp primarily originate from?

<p>Neck and face (D)</p> Signup and view all the answers

What is the primary reason behind the gaping nature of scalp wounds?

<p>Rigidity of the skull (B)</p> Signup and view all the answers

What is the primary role of the hyoid bone in the neck?

<p>Attachment for tongue muscles (A)</p> Signup and view all the answers

Which of the following structures is involved in the drainage of venous blood from the brain?

<p>Dural blood sinuses (A)</p> Signup and view all the answers

Which cranial nerve is primarily responsible for facial expression?

<p>Facial nerve (CN VII) (A)</p> Signup and view all the answers

What is the main function of the parathyroid glands?

<p>Control calcium levels in the blood (D)</p> Signup and view all the answers

Which system primarily innervates the heart and smooth muscles?

<p>Autonomic nervous system (D)</p> Signup and view all the answers

Which muscle is primarily responsible for stabilizing the neck and head?

<p>Sternocleidomastoid (A)</p> Signup and view all the answers

What is the primary function of the vascular structures in the neck?

<p>Supply blood to the brain and face (C)</p> Signup and view all the answers

What is the shape and location of the posterior fontanelle in an infant's skull?

<p>Triangular, between the two parietal bones and the occipital bone (A)</p> Signup and view all the answers

At what age does the mastoid antrum typically reach a depth of 15 mm from the surface?

<p>By puberty (A)</p> Signup and view all the answers

What characterizes the angle of the mandible at birth?

<p>Obtuse, with the head above the body (A)</p> Signup and view all the answers

How does the tympanic part of the temporal bone compare at birth versus in adulthood?

<p>It is cartilaginous at birth and bony in adulthood (A)</p> Signup and view all the answers

What happens to the dentary bones after birth?

<p>They fuse at the midline by the end of the first year (A)</p> Signup and view all the answers

What passes through the foramen spinosum?

<p>Middle meningeal artery (D)</p> Signup and view all the answers

Which artery enters the skull through the carotid canal?

<p>Internal carotid artery (D)</p> Signup and view all the answers

What fills the inferior opening of the foramen lacerum in life?

<p>Cartilage and fibrous tissue (C)</p> Signup and view all the answers

Where does the internal carotid artery turn after entering the foramen?

<p>Medially towards the anterior clinoid process (C)</p> Signup and view all the answers

What anatomical structure bounds the posterior cranial fossa anteriorly?

<p>Superior border of the petrous part of the temporal bone (C)</p> Signup and view all the answers

Which structure passes backward and upward across the squamous part of the temporal bone?

<p>Posterior branch of the mandibular nerve (D)</p> Signup and view all the answers

What part of the brain is housed in the posterior cranial fossa?

<p>Cerebellum (D)</p> Signup and view all the answers

What is the role of the tentorium cerebelli in the cranial cavity?

<p>Separates the cerebellum from the cerebrum (A)</p> Signup and view all the answers

Which structure runs forward in the cavernous sinus after reaching the anterior clinoid process?

<p>Internal carotid artery (A)</p> Signup and view all the answers

What occurs during the retraction of the mandible?

<p>The head of the mandible is pulled backward. (A)</p> Signup and view all the answers

Which muscles predominantly assist in the protrusion of the mandible?

<p>Lateral pterygoid muscles (A)</p> Signup and view all the answers

What is the primary reason that skull bones are mobile at birth?

<p>They are not fully ossified. (A)</p> Signup and view all the answers

How does lateral chewing movement occur?

<p>By alternately protruding and retracting the mandible (B)</p> Signup and view all the answers

What is the shape of the anterior fontanelle in neonates?

<p>Diamond-shaped (D)</p> Signup and view all the answers

What is the facial to cranium size ratio in an adult skull compared to a neonatal skull?

<p>1:1 for adults and 1:8 for neonates (B)</p> Signup and view all the answers

What results in the growth of the oral apparatus during childhood?

<p>Contraction of posterior fibers of the temporalis and muscles of mastication (B)</p> Signup and view all the answers

At what age does the anterior fontanelle usually close?

<p>18 months (C)</p> Signup and view all the answers

During which specific jaw movement is the downward pressure applied to achieve dislocation reduction?

<p>Mandible protrusion (A)</p> Signup and view all the answers

Which bones are separated by the anterior fontanelle?

<p>Frontal and parietal bones (D)</p> Signup and view all the answers

Which part of the temporalis muscle assists with mandible retraction?

<p>Posterior fibers (B)</p> Signup and view all the answers

What connects the skull bones during infancy?

<p>Fibrous tissue or cartilage (C)</p> Signup and view all the answers

What is the primary function of the lateral pterygoid muscles?

<p>Protract the mandible (C)</p> Signup and view all the answers

Which fontanelle is clinically considered most important?

<p>Anterior fontanelle (D)</p> Signup and view all the answers

Which statement best describes the features of the neonatal skull in comparison to the adult skull?

<p>The neonatal skull has a disproportionately large cranium compared to the face. (D)</p> Signup and view all the answers

Which of these features differentiates skull bones in neonates from those in adults?

<p>They have membranous intervals. (C)</p> Signup and view all the answers

What is the primary structural characteristic of the bones of the neonatal skull?

<p>They are smooth and unilaminar. (D)</p> Signup and view all the answers

Which structure is found anteriorly in relation to the mandible and the skull?

<p>Mandibular notch (C)</p> Signup and view all the answers

What anatomical feature is formed by the intersection of the frontal and parietal bones?

<p>Bregmatic suture (D)</p> Signup and view all the answers

Which artery is noted in the context of the maxillary region during infancy?

<p>Maxillary artery (A)</p> Signup and view all the answers

What is the primary arterial supply to the oral cavity?

<p>Lingual artery (A), Facial artery (C)</p> Signup and view all the answers

Which nerves are primarily responsible for the innervation of the intrinsic muscles of the tongue?

<p>Hypoglossal nerve (A)</p> Signup and view all the answers

What structures form the bridge of the nose?

<p>Nasal bones (A)</p> Signup and view all the answers

Which areas of the body drain into the mastoid nodes?

<p>The scalp above and behind the ear (A)</p> Signup and view all the answers

What structure is located superior to the inferior sagittal sinus?

<p>Superior sagittal sinus (D)</p> Signup and view all the answers

What primary function does the face serve in terms of communication?

<p>Facilitating nonvocal communication through facial expression (B)</p> Signup and view all the answers

Identify the key muscles involved in the mechanism of swallowing.

<p>Palatoglossus and pharyngeal constrictors (B)</p> Signup and view all the answers

Which of the following is NOT a feature of the facial region as defined in the content?

<p>Encloses the spinal column (B)</p> Signup and view all the answers

Which layer of the dura mater is associated with the periosteum?

<p>Endosteal layer (D)</p> Signup and view all the answers

Which statement accurately describes the carotid sinus?

<p>It functions as a baroreceptor for blood pressure monitoring. (D)</p> Signup and view all the answers

What anatomical features are described for the bones of the front of the skull?

<p>They include the skull base and facial skeleton (A)</p> Signup and view all the answers

In the context of cerebral blood flow, where are cerebral veins primarily located?

<p>Subarachnoid space (B)</p> Signup and view all the answers

What is the primary role of the laryngeal intrinsic muscles?

<p>Assisting in phonation (B)</p> Signup and view all the answers

Which feature is part of the structure of the scalp?

<p>Emissary veins (A)</p> Signup and view all the answers

Which anatomical structures are primarily located within the defined facial area?

<p>Orbits, nose, mouth, and ears (C)</p> Signup and view all the answers

What is the primary function of the carotid body?

<p>Sensing changes in blood oxygen levels (D)</p> Signup and view all the answers

Which extrinsic muscle of the tongue assists in its retraction?

<p>Styloglossus (B)</p> Signup and view all the answers

What does the term 'subarachnoid space' refer to?

<p>Space between the arachnoid and pia mater (C)</p> Signup and view all the answers

What is the primary function of the arachnoid granulations?

<p>Reabsorb cerebrospinal fluid (B)</p> Signup and view all the answers

What do the inferior conchae primarily contribute to?

<p>The structure of the nasal cavity (A)</p> Signup and view all the answers

Which structure encases the primary arteries supplying the brain?

<p>Pia mater (A)</p> Signup and view all the answers

What is the shape of the hyoid bone?

<p>U-shaped (D)</p> Signup and view all the answers

What attaches the hyoid bone to the skull?

<p>Stylohyoid ligament (A)</p> Signup and view all the answers

What type of tissue occupies the subaponeurotic space?

<p>Loose connective tissue (C)</p> Signup and view all the answers

Which structure connects the superficial veins of the scalp with the intracranial venous sinuses?

<p>Emissary veins (B)</p> Signup and view all the answers

Which bone is suspended in position by muscles connecting it to the mandible and other structures?

<p>Hyoid bone (D)</p> Signup and view all the answers

What does the pericranium cover?

<p>Outer surface of the skull bones (A)</p> Signup and view all the answers

What does the hyoid bone primarily support?

<p>Base of the tongue (D)</p> Signup and view all the answers

Which muscle is primarily associated with the hyoid bone?

<p>Stylohyoid muscle (D)</p> Signup and view all the answers

How many layers does the scalp consist of?

<p>Five layers (C)</p> Signup and view all the answers

What may happen to the stylohyoid ligament over time?

<p>It may ossify (B)</p> Signup and view all the answers

Which muscle primarily composes the action of compressing the cheeks against the teeth?

<p>Bucconator (C)</p> Signup and view all the answers

Which of the following muscles mainly elevates the upper lip?

<p>Zygomaticus minor (A)</p> Signup and view all the answers

What is the primary action of the depressor anguli oris?

<p>Depresses the corners of the mouth (D)</p> Signup and view all the answers

Which muscle is involved in the action of pulling the corners of the mouth upwards?

<p>Zygomaticus major (C)</p> Signup and view all the answers

Which artery supplies blood to the scalp above and behind the auricle?

<p>Posterior auricular artery (B)</p> Signup and view all the answers

Where does the levator labii superioris originate?

<p>From the maxilla (B)</p> Signup and view all the answers

Which nerve innervates the muscles that separate the lips?

<p>Motor branch of the facial nerve (D)</p> Signup and view all the answers

Which muscle is responsible for the action of compressing lips together?

<p>Orbicularis oris (D)</p> Signup and view all the answers

Which muscle assists in the movement of the lower lip downwards?

<p>Depressor labii inferioris (D)</p> Signup and view all the answers

What is the role of the mentalis muscle?

<p>To elevate the chin (C)</p> Signup and view all the answers

Which extraocular muscle primarily facilitates the movement of the eyeball upward?

<p>Superior rectus (B)</p> Signup and view all the answers

Which nerve is primarily responsible for sensory innervation to the upper eyelid?

<p>Trigeminal nerve, ophthalmic division (A)</p> Signup and view all the answers

What is the main function of the lacrimal apparatus?

<p>Producing and draining tears (D)</p> Signup and view all the answers

Which branch of the subclavian artery supplies blood to the brain?

<p>Vertebral artery (C)</p> Signup and view all the answers

What type of innervation is primarily supplied by the sympathetic nervous system to the orbit?

<p>Sympathetic innervation (B)</p> Signup and view all the answers

What neurological condition was diagnosed in the 58-year-old woman?

<p>Bell's palsy (A)</p> Signup and view all the answers

What symptom indicated that the woman had paralysis of the right facial muscles?

<p>Inability to pucker her lips (C)</p> Signup and view all the answers

Which of the following statements about the patient's condition is accurate?

<p>She had an excellent prognosis and complete recovery. (B)</p> Signup and view all the answers

Which physiological factor contributed to the development of the woman's condition?

<p>Elevated blood pressure leading to a stroke (D)</p> Signup and view all the answers

What is one potential effect of the observed facial paralysis during her breakfast?

<p>Food sticking to the inside of her cheek (C)</p> Signup and view all the answers

Flashcards

Skull (Osteology)

The bony structure of the head, protecting the brain and providing attachment points for muscles and facial features.

Meninges

Protective membranes surrounding the brain and spinal cord.

Facial Skeleton

Bony structure of the face, forming its framework, and housing sensory organs.

Neck Muscles

Muscles in the neck, responsible for movement and support.

Signup and view all the flashcards

Head & Neck Arteries

Blood vessels supplying the head and neck.

Signup and view all the flashcards

Cranial Nerves

Twelve pairs of nerves arising from the brain, carrying sensory and motor information.

Signup and view all the flashcards

Eye Structure

Components of the eye, including the cornea, lens, retina, and optic nerve.

Signup and view all the flashcards

Ear Structure

External, middle, and inner ear structures responsible for hearing and balance.

Signup and view all the flashcards

Oral Cavity

The mouth and the structures within, crucial for digestion and speech.

Signup and view all the flashcards

Pharynx

Muscular tube connecting the mouth and nasal cavity to the esophagus and larynx.

Signup and view all the flashcards

Respiratory System

Organs involved in breathing, including nose, lungs, etc.

Signup and view all the flashcards

Hypophysis

Pituitary gland; important endocrine gland.

Signup and view all the flashcards

Zygomaticotemporal Nerve

Branch of the trigeminal nerve, supplying scalp over the temple.

Signup and view all the flashcards

Scalp Arteries

Run through connective tissue, forming a network.

Signup and view all the flashcards

Occipitofrontalis Muscle

Muscle moving the scalp on the skull, raising eyebrows.

Signup and view all the flashcards

Orbicularis Oculi

Muscle that closes the eyelids

Signup and view all the flashcards

Compressor Nasi

Muscle that compresses nasal cartilages

Signup and view all the flashcards

Dilator Naris

Muscle that widens nasal aperture

Signup and view all the flashcards

Procerus

Muscle wrinkling the skin between eyebrows

Signup and view all the flashcards

Orbicularis Oris

Muscle of the mouth, important for shaping lips.

Signup and view all the flashcards

Meninges

Protective membranes surrounding the brain and spinal cord.

Signup and view all the flashcards

Dura Mater

The outermost layer of the meninges, tough and fibrous.

Signup and view all the flashcards

Cranial Bones

Bones forming the cranium, protecting the brain.

Signup and view all the flashcards

Hyoid Bone

U-shaped bone in the neck, supports the tongue.

Signup and view all the flashcards

Cervical Spine

Vertebrae in the neck, supporting the head.

Signup and view all the flashcards

Temporomandibular Joint (TMJ)

Joint connecting jawbone to skull, allows chewing.

Signup and view all the flashcards

Muscles of Mastication

Muscles that move the jaw during chewing.

Signup and view all the flashcards

Scalp

Outer covering of the head, protective.

Signup and view all the flashcards

Facial Muscles

Muscles controlling facial expressions.

Signup and view all the flashcards

Cranial Nerves

12 pairs of nerves emerging from the brain.

Signup and view all the flashcards

Cranial Nerves Function

Control various functions, sensations, and movements.

Signup and view all the flashcards

Dural Sinuses

Venous channels within the dura mater.

Signup and view all the flashcards

Cerebral Arterial Circle

Circular network of arteries at the base of the brain.

Signup and view all the flashcards

Bones of the skull (lateral view)

Diagram showing the various bones that form the lateral aspect of the human skull, including the temporal, parietal, frontal, and sphenoid bones.

Signup and view all the flashcards

Suture (Coronal)

The articulation (joint) between the frontal and parietal bones.

Signup and view all the flashcards

Temporal bone

A bone forming part of the side and base of the skull.

Signup and view all the flashcards

Zygomatic bone

The cheek bone, located near the temporal bone.

Signup and view all the flashcards

Mandible

Lower jawbone, articulates with the temporal bone.

Signup and view all the flashcards

Cranial fossa (middle)

Part of the skull base, located between the anterior and posterior cranial fossae.

Signup and view all the flashcards

Petrous part of temporal bone

Part of the temporal bone; separates the Middle & Posterior Cranial fossae.

Signup and view all the flashcards

Foramen

An opening in a bone.

Signup and view all the flashcards

Parietal bone

Bone forming part of the top and side of the cranium.

Signup and view all the flashcards

Frontal bone

Bone forming the forehead and part of the eye sockets.

Signup and view all the flashcards

Occipital bone

Bone forming the back of the skull.

Signup and view all the flashcards

Sphenoid bone

Complex bone forming part of the base, middle, and sides of the skull.

Signup and view all the flashcards

Cranial Nerve Pathways

Tracing the course of cranial nerves from their brain origin to their destinations, including skull exits and peripheral relations.

Signup and view all the flashcards

Temporal, Infratemporal, & Pterygopalatine Fossae

These fossae are skull cavities containing important structures

Signup and view all the flashcards

Blood Flow (Maxillary & Superficial Temporal Arteries)

Tracing blood flow through arteries, including branches and anastomoses, highlighting supplied areas.

Signup and view all the flashcards

Nerves Through the Fossae

Describing nerves traversing the specific skull cavities in terms of functional components and termination areas.

Signup and view all the flashcards

Cervical/Brachial Plexuses

Describing the formation and structure of these nerve networks, including their origin and distribution.

Signup and view all the flashcards

Phrenic Nerve & Ansa Cervicalis

Outlining the formation, structure, relations, and distribution of the Phrenic nerve and the Ansa Cervicalis.

Signup and view all the flashcards

Autonomic Innervation (Head)

Identifying sources and tracing paths of pre- and post-ganglionic autonomic neurons to their destination in the head specifying synapses point

Signup and view all the flashcards

Neck Fascia

Describing superficial and deep cervical fascia their arrangement and functions related to neck organization.

Signup and view all the flashcards

Neck Triangles

Defining the boundaries and contents of different neck triangles

Signup and view all the flashcards

Neck Muscles

Identification of neck muscles, their attachments, innervation, and actions

Signup and view all the flashcards

Ear Anatomy

Identifying the boundaries of the external, middle, and internal ear, and their contents.

Signup and view all the flashcards

Vascular Supply of Neck

Blood vessels supplying blood to the tissues and structures of the neck, including arteries, veins, and their branches.

Signup and view all the flashcards

Carotid Sinus

A dilation in the internal carotid artery, sensitive to blood pressure changes, regulating heart rate.

Signup and view all the flashcards

Carotid Body

A small structure in the carotid artery, essential in oxygenation of blood regulating breathing.

Signup and view all the flashcards

Lymphatic Drainage of Neck

The pathway of lymph (fluid containing immune cells) from the neck regions to lymph nodes for filtration and immune response.

Signup and view all the flashcards

Ear Structure (Anatomy)

Identification of the external, middle, and inner ear and their related structures.

Signup and view all the flashcards

Ear Structure (Hearing/Equilibrium)

Relationship of each ear region to the mechanisms of hearing and balance.

Signup and view all the flashcards

Innervation of the Ear

Describing how the ear regions are connected to nerves (or innervation) to control and sense specific functions.

Signup and view all the flashcards

Boundaries of Oral Cavity, Pharynx, Esophagus

Defining the areas and structures forming the mouth, pharynx, and esophagus.

Signup and view all the flashcards

Swallowing Mechanism

Sequence of muscle actions and nervous control during the act of swallowing.

Signup and view all the flashcards

Salivary Glands

Structures producing saliva, crucial for digestion.

Signup and view all the flashcards

Larynx Structure (Morphological)

Identifying the physical characteristics of the larynx.

Signup and view all the flashcards

Larynx Muscles (Extrinsic/Intrinsic)

Identify each muscle (of the larynx), outlining their roles in sound production.

Signup and view all the flashcards

Temporomandibular Joint (TMJ)

The joint connecting the jawbone to the skull, allowing for chewing and other mouth movements.

Signup and view all the flashcards

Lateral Pterygoid Muscle

A muscle of mastication that pulls the mandible forward, playing a key role in jaw depression.

Signup and view all the flashcards

Mandible Depression

The movement of the lower jaw downwards.

Signup and view all the flashcards

Mandible Elevation

Elevating or raising the lower jaw.

Signup and view all the flashcards

TMJ Dislocation

A condition where the mandible and articular disc move out of their proper position in the joint.

Signup and view all the flashcards

Articular Disc

A cartilage pad that cushions the TMJ, helping in smooth jaw movement.

Signup and view all the flashcards

Articular Tubercle

A bony protuberance on the temporal bone, a critical landmark for TMJ movement.

Signup and view all the flashcards

Digastrics, Geniohyiods, and Mylohyoids

Muscles used in mandibular depression.

Signup and view all the flashcards

Temporalis, Masseter and Medial Pterygoids

Muscles responsible for Mandible Elevation

Signup and view all the flashcards

Neonatal Skull Bones

Skull bones in newborns are not fully ossified, connected by fibrous tissue or cartilage, and have membrane-filled gaps (fontanelles).

Signup and view all the flashcards

Fontanelles

Membranous gaps in the skull found in newborns, where the cranial bones have not fused.

Signup and view all the flashcards

Anterior Fontanelle

Diamond-shaped fontanelle located between the frontal and parietal bones at the top of the skull.

Signup and view all the flashcards

Posterior Fontanelle

Triangular fontanelle located between the parietal and occipital bones at the back of the skull.

Signup and view all the flashcards

Sutures

Immovable joints that connect the cranial bones in adults.

Signup and view all the flashcards

Temporomandibular Joint (TMJ)

Joint connecting the mandible (lower jaw) to the skull; allows for jaw movement.

Signup and view all the flashcards

Maxillofacial Fractures

Fractures of the facial bones, typically resulting from significant trauma.

Signup and view all the flashcards

Posterior Cranial Fossa Fractures

Fractures in the back part of the skull base, where blood can leak into the neck.

Signup and view all the flashcards

Cerebrospinal Fluid Leakage

Escape of cerebrospinal fluid (CSF) due to fractures, often seen in the nasal cavity.

Signup and view all the flashcards

Le Fort Fractures

Specific types of facial fractures, classified as I, II, or III.

Signup and view all the flashcards

Midface Mobility

Shiftiness or movement of the midface bones, potentially seen in fractures.

Signup and view all the flashcards

Malocclusion

Misalignment of teeth, often seen in facial fractures that affect the jaw alignment.

Signup and view all the flashcards

Orbital Wall Damage

Fractures affecting the walls of the eye sockets, causing double vision.

Signup and view all the flashcards

Infraorbital Nerve

Nerve supplying sensation to the cheek and upper gum area.

Signup and view all the flashcards

Maxillary Air Sinus

Air-filled space within the maxilla, potentially involved in leakage in facial fractures.

Signup and view all the flashcards

Facial Trauma

A significant impact or injury to the face causing potential fractures.

Signup and view all the flashcards

Double Vision (Diplopia)

A symptom of problems with the eye muscles and alignment, often due to facial trauma.

Signup and view all the flashcards

Zygomatictemporal Nerve

A branch of the trigeminal nerve, supplying the scalp over the temple.

Signup and view all the flashcards

Scalp Arteries

Blood vessels that run through the scalp's connective tissue, forming a network.

Signup and view all the flashcards

Occipitofrontalis Muscle

A scalp muscle that moves the scalp on the skull, primarily used to raise the eyebrows.

Signup and view all the flashcards

Orbicularis Oculi

A muscle that closes the eyelids.

Signup and view all the flashcards

Compressor Nasi

Muscle that compresses the nasal cartilages.

Signup and view all the flashcards

Dilator Naris

A muscle that widens the nasal aperture.

Signup and view all the flashcards

Procerus

Muscle that wrinkles the skin between the eyebrows.

Signup and view all the flashcards

Orbicularis Oris

A muscle of the mouth used for shaping the lips.

Signup and view all the flashcards

Vascular Supply of Neck

Blood vessels supplying blood to the neck structures, including arteries, veins, and their branches.

Signup and view all the flashcards

Carotid Sinus

A dilation in the internal carotid artery, sensitive to blood pressure changes, regulating heart rate.

Signup and view all the flashcards

Carotid Body

A small structure in the carotid artery, crucial in oxygen levels, regulating breathing.

Signup and view all the flashcards

Lymphatic Drainage of Neck

Path of lymph from neck regions to lymph nodes for filtration and immune response.

Signup and view all the flashcards

Ear Structure (Hearing/Equilibrium)

Relationship of ear regions to hearing and balance mechanisms.

Signup and view all the flashcards

Innervation of the Ear

How nerve connections control and sense specific ear functions.

Signup and view all the flashcards

Boundaries of Oral Cavity, Pharynx, Esophagus

Areas/structures defining the mouth, pharynx, and esophagus.

Signup and view all the flashcards

Swallowing Mechanism

Sequence of muscle actions and nervous control during swallowing.

Signup and view all the flashcards

Salivary Glands

Structures producing saliva crucial for digestion.

Signup and view all the flashcards

Larynx Structure (Morphological)

Physical characteristics of the larynx.

Signup and view all the flashcards

Larynx Muscles (Extrinsic/Intrinsic)

Identify each larynx muscle, describing their roles in sound production.

Signup and view all the flashcards

Neonatal skull bones

Skull bones in newborns are not fully fused, connected by flexible tissue, and have gaps called fontanelles.

Signup and view all the flashcards

Fontanelles

Membranous gaps in the skull of newborns where cranial bones haven't fused yet.

Signup and view all the flashcards

Anterior fontanelle

Diamond-shaped fontanelle located between the frontal and parietal bones.

Signup and view all the flashcards

Posterior fontanelle

Triangular fontanelle located between the parietal and occipital bones.

Signup and view all the flashcards

Sutures

Immovable joints connecting cranial bones in adults; rigid connections.

Signup and view all the flashcards

Temporomandibular Joint (TMJ)

Joint connecting the mandible (lower jaw) to the skull.

Signup and view all the flashcards

Temporomandibular Joint (TMJ)

The joint connecting the jawbone (mandible) to the skull, allowing movement for chewing and other mouth actions.

Signup and view all the flashcards

Lateral Pterygoid Muscle

A muscle of mastication (chewing) that pulls the mandible forward, crucial for jaw depression.

Signup and view all the flashcards

Mandible Depression

The downward movement of the lower jaw.

Signup and view all the flashcards

Mandible Elevation

The upward movement of the lower jaw.

Signup and view all the flashcards

TMJ Dislocation

Displacement of the mandible and articular disc from their normal positions within the TMJ.

Signup and view all the flashcards

Articular Disc

A cartilage pad within the TMJ that cushions the joint and helps with smooth jaw movements.

Signup and view all the flashcards

Articular Tubercle

A bony prominence on the temporal bone where the jaw's movement is guided during chewing and biting.

Signup and view all the flashcards

Digastrics, Geniohyoids, and Mylohyoids

Muscles involved in depressing (opening) the mandible.

Signup and view all the flashcards

Temporalis, Masseter, and Medial Pterygoids

Muscles involved in elevating (closing) the mandible.

Signup and view all the flashcards

Scalp Drainage

Drainage from the lateral part of the scalp flows through a venous plexus, ultimately reaching the maxillary vein and superficial cervical nodes.

Signup and view all the flashcards

Scalp Layers

Skin, subcutaneous tissue, and epicranial aponeurosis are closely connected, separated from the periosteum by loose tissue.

Signup and view all the flashcards

Scalp Wounds

Scalp wounds caused by blunt objects often appear as gaping wounds due to muscle pull and close connection of layers.

Signup and view all the flashcards

Scalp Infections

Sebaceous glands in the scalp skin are prone to infection and damage from repeated hair treatment.

Signup and view all the flashcards

Scalp Hemorrhage

Significant bleeding from the scalp can be life-threatening, often stemming from superficial arteries from the face and neck.

Signup and view all the flashcards

Scalp Arterial Supply

The scalp has a rich blood supply to nourish hair follicles, causing bleeding from minor cuts.

Signup and view all the flashcards

Scalp Sensory Nerves

Sensory nerves in the scalp are arranged in two groups: trigeminal branches (anterior) and cervical spinal nerves (posterior).

Signup and view all the flashcards

Occipitofrontalis Muscle

A muscle in the scalp that raises the eyebrows, used in expressions like surprise or horror.

Signup and view all the flashcards

Auriculotemporal Nerve

A branch of the trigeminal nerve supplying skin over the temporal region of the head.

Signup and view all the flashcards

Greater Occipital Nerve

A cervical spinal nerve branch supplying scalp skin as far forward as the vertex of the skull, descending from the posterior of the scalp.

Signup and view all the flashcards

Supraorbital Nerve

A trigeminal nerve branch supplying scalp as far backward as vertex, along the forehead, and around the superior orbital margin.

Signup and view all the flashcards

Zygomaticotemporal Nerve

A branch of the trigeminal nerve that supplies sensory information to the scalp's temporal side (near the temple).

Signup and view all the flashcards

Small motor root of mandibular nerve

Branch of the mandibular nerve responsible for motor functions.

Signup and view all the flashcards

Infratemporal fossa

Space below the temporal bone, containing nerves and blood vessels.

Signup and view all the flashcards

Foramen ovale

Opening in the sphenoid bone.

Signup and view all the flashcards

Foramen spinosum

Hole near the foramen ovale, transmits middle meningeal artery.

Signup and view all the flashcards

Middle meningeal artery

Artery supplying blood to the meninges of the brain.

Signup and view all the flashcards

Foramen lacerum

Irregular-shaped opening between temporal and sphenoid bones.

Signup and view all the flashcards

Carotid canal

Canal that houses the internal carotid artery.

Signup and view all the flashcards

Internal carotid artery

Artery that supplies blood to the brain via the carotid canal.

Signup and view all the flashcards

Cavernous sinus

Venous space where internal carotid artery passes.

Signup and view all the flashcards

Posterior cranial fossa

Deep region of the skull housing cerebellum, pons, and medulla oblongata.

Signup and view all the flashcards

Interior of the Skull

The internal structure of the skull, housing the brain and associated structures.

Signup and view all the flashcards

Neck Muscles

Muscles located in the neck region, responsible for movement and support.

Signup and view all the flashcards

Meninges

Protective membranes surrounding the brain and spinal cord.

Signup and view all the flashcards

Venous (Dural) Blood Sinuses

Venous channels within the dura mater, draining blood from the brain.

Signup and view all the flashcards

Scalp

The outer covering of the head, protecting underlying structures.

Signup and view all the flashcards

Neck Triangles

Regions in the neck, subdivided for anatomical description and surgical relevance.

Signup and view all the flashcards

Facial Skeleton

Bony framework of the face.

Signup and view all the flashcards

Facial Muscles

Muscles that control facial expressions.

Signup and view all the flashcards

Cranial Nerves

Twelve pairs of nerves emerging from the brain; carry sensory and motor signals.

Signup and view all the flashcards

Head and Neck Arteries

Blood vessels supplying blood to structures in the head and neck.

Signup and view all the flashcards

Orbit and Eye

Eye socket and its related structures.

Signup and view all the flashcards

Ear

Structure responsible for hearing and balance.

Signup and view all the flashcards

Oral Cavity

Mouth and structures within, essential for digestion and speech.

Signup and view all the flashcards

Pharynx

Muscular tube connecting the mouth and nasal cavity to the esophagus and larynx

Signup and view all the flashcards

Respiratory System

Organs involved in breathing for gas exchange.

Signup and view all the flashcards

Hypophysis

Important endocrine gland; pituitary gland

Signup and view all the flashcards

Thyroid Gland

Important endocrine gland; crucial for metabolism.

Signup and view all the flashcards

Parathyroid Glands

Endocrine glands regulating calcium

Signup and view all the flashcards

Radiographic Anatomy

Study of anatomy using imaging techniques

Signup and view all the flashcards

Surface Anatomy

Study of body structures visible on the surface

Signup and view all the flashcards

Mandible Protrusion

Movement of the lower jaw forward, bringing lower teeth over upper teeth. Caused by contraction of the lateral pterygoid muscles (on both sides) and assisted by the medial pterygoids.

Signup and view all the flashcards

Mandible Retraction

Movement of the lower jaw backward, pulling the articular disc and mandible head back into the mandibular fossa. Primarily caused by posterior temporalis muscle contraction.

Signup and view all the flashcards

Lateral Chewing Movements

Side-to-side jaw movements achieved by alternately protruding and retracting the mandible on each side.

Signup and view all the flashcards

TMJ Dislocation

Displacement of the mandible and articular disc from their normal position in the temporomandibular joint (TMJ).

Signup and view all the flashcards

Articular Disc

Cartilage pad in the TMJ that cushions the joint and aids smooth jaw movement.

Signup and view all the flashcards

Articular Tubercle

Bony projection on the temporal bone, a reference point for TMJ movement.

Signup and view all the flashcards

Neonatal Skull

Newborn skull has a larger cranium relative to the face, with a ratio of approximately 1:8, compared to the adult ratio of approximately 1:1.

Signup and view all the flashcards

Posterior Fontanelle

Triangular, located between the parietal and occipital bones; usually closes by the end of the first year.

Signup and view all the flashcards

Anterolateral Fontanelle

Located at the junction of frontal, parietal, squamous temporal, and greater wing of sphenoid bones.

Signup and view all the flashcards

Posterior fontanelle shape

Triangular.

Signup and view all the flashcards

Mastoid Antrum

Part of the temporal bone, about 3mm deep to the floor of the suprameatal triangle at birth.

Signup and view all the flashcards

Tympanic membrane (eardrum)

At birth, it is nearly as large as in adults but faces more inferiorly.

Signup and view all the flashcards

Mandible

Lower jaw, formed by two dentaries at birth; fuses into a single bone by the end of the first year.

Signup and view all the flashcards

Neonatal Skull

Skull of a newborn; bones are not fully fused, connected by soft spots (fontanelles).

Signup and view all the flashcards

Fontanelles

Membranous gaps in newborn skulls, where bones haven't fused yet.

Signup and view all the flashcards

Anterior Fontanelle

Diamond-shaped fontanelle between frontal and parietal bones.

Signup and view all the flashcards

Posterior Fontanelle

Triangular fontanelle between parietal and occipital bones.

Signup and view all the flashcards

Sutures (adult skull)

Immovable joints connecting the cranial bones in adults.

Signup and view all the flashcards

Temporomandibular Joint (TMJ)

Joint connecting the lower jaw (mandible) to the skull, for jaw movement.

Signup and view all the flashcards

TMJ anterior relations

masseter muscle and nerve/artery in front of the joint

Signup and view all the flashcards

TMJ posterior relations

Tympanic plate and glenoid process (temporal lobe) at rear

Signup and view all the flashcards

TMJ lateral relations

Parotid gland and skin/fascia on the side

Signup and view all the flashcards

TMJ medial relations

Maxillary artery and vein and the auriculotemporal nerve are on the inside (medial) side

Signup and view all the flashcards

Vascular supply of the neck

The network of blood vessels (arteries, veins) that delivers blood to the neck's tissues and structures.

Signup and view all the flashcards

Carotid sinus

A dilation in the internal carotid artery, sensitive to blood pressure changes and involved in regulating heart rate.

Signup and view all the flashcards

Carotid body

A structure in the carotid artery that senses oxygen levels in the blood and regulates breathing.

Signup and view all the flashcards

Lymphatic drainage of the neck

The pathways of lymph from the neck to lymph nodes, filtering and processing immune responses.

Signup and view all the flashcards

Ear's vascular supply

The network of blood vessels supplying the ear with blood.

Signup and view all the flashcards

Ear's innervation

The nerves that control the ear's various functions (hearing, balance).

Signup and view all the flashcards

Ear's neighboring structures

The components near the ear, like facial structures, or the skull.

Signup and view all the flashcards

Hearing mechanism

The way the ear transmits sound waves into electrical signals interpreted by the brain

Signup and view all the flashcards

Boundaries of oral cavity

Structures that enclose the mouth, defining where the mouth starts.

Signup and view all the flashcards

Boundaries of pharynx

Structures that enclose the pharynx, defining the area.

Signup and view all the flashcards

Boundaries of esophagus

Structures that encloses the esophagus, defining its area.

Signup and view all the flashcards

Swallowing mechanism

The sequence of actions and the muscles responsible for swallowing.

Signup and view all the flashcards

Salivary Glands

Structures that produce saliva, crucial for digestion and mouth health.

Signup and view all the flashcards

Inferior conchae

Two nasal bones forming part of the nasal cavity's structure.

Signup and view all the flashcards

Mandible

The lower jawbone, articulating with the temporal bone.

Signup and view all the flashcards

Superior sagittal sinus

A venous channel within the dura mater, collecting blood from the brain.

Signup and view all the flashcards

Arachnoid granulation

Structures that absorb cerebrospinal fluid, returning it to the venous circulation.

Signup and view all the flashcards

Emissary vein

Small veins connecting the intracranial venous sinuses to extracranial veins.

Signup and view all the flashcards

Dura mater

The outermost layer of the meninges.

Signup and view all the flashcards

Subarachnoid space

Space between the arachnoid mater and pia mater; filled with cerebrospinal fluid.

Signup and view all the flashcards

Cerebral artery

Artery supplying oxygenated blood to the brain.

Signup and view all the flashcards

Cerebral vein

Vein carrying deoxygenated blood away from the brain tissue.

Signup and view all the flashcards

Inferior sagittal sinus

A venous channel of the brain, draining blood.

Signup and view all the flashcards

Hyoid Bone

U-shaped bone in the neck, supporting the tongue and attached to other structures.

Signup and view all the flashcards

Scalp Layers

The scalp has five layers: skin, connective tissue, aponeurosis, loose connective tissue, and periosteum.

Signup and view all the flashcards

Scalp Movement

The scalp's layers slide over the loose connective tissue beneath the periosteum.

Signup and view all the flashcards

Pericranium

Periosteum covering the outer surface of skull bones.

Signup and view all the flashcards

Emmisary Veins

Valveless veins connecting superficial scalp veins with the diploic veins of the skull bones and intracranial venous sinuses.

Signup and view all the flashcards

Lymph drainage of the scalp (above ear)

Lymphatic vessels above and behind the ear drain into the mastoid nodes.

Signup and view all the flashcards

Lymph drainage of the scalp (behind ear)

Lymphatic vessels in the back of the scalp drain into the occipital nodes.

Signup and view all the flashcards

Facial region boundaries

From the eyebrow arches (superiorly) to the jawline (inferiorly) and the ears (laterally).

Signup and view all the flashcards

Facial functions

Houses the interfaces for vision, respiration, smell, taste, food processing, speaking, and hearing.

Signup and view all the flashcards

Importance of facial expressions

Facial expressions are a critical means of non-verbal communication.

Signup and view all the flashcards

Mandible

The lower jawbone, articulates with the temporal bone.

Signup and view all the flashcards

Skin Encircles Oral Orifice

The skin surrounding the mouth opening.

Signup and view all the flashcards

Facial Nerve

Nerve controlling facial expressions.

Signup and view all the flashcards

Levator Labii Superioris

Muscle raising the upper lip.

Signup and view all the flashcards

Zygomaticus Major

Muscle involved in smiling.

Signup and view all the flashcards

Risorius

Muscle involved in stretching the lips horizontally.

Signup and view all the flashcards

Buccinator

Muscle compressing the cheeks and lips against teeth.

Signup and view all the flashcards

Depressor Anguli Oris

Muscle pulling the corner of the mouth downward.

Signup and view all the flashcards

Supratrochlear & Supraorbital Arteries

Arteries supplying the forehead.

Signup and view all the flashcards

Posterior Auricular Artery

Artery supplying the scalp behind the ear.

Signup and view all the flashcards

Facial Paralysis

Loss of muscle function on one side of the face, causing drooping or inability to move certain facial muscles.

Signup and view all the flashcards

Bell's Palsy

A temporary facial paralysis due to inflammation of the facial nerve.

Signup and view all the flashcards

Stroke

A sudden interruption of blood flow to the brain, causing brain damage.

Signup and view all the flashcards

Cerebral Hemorrhage

Bleeding within the brain tissue; a type of stroke.

Signup and view all the flashcards

Facial Nerve

The seventh cranial nerve, controlling facial muscles.

Signup and view all the flashcards

Cranial Nerve

A nerve that originates directly from the brain (or brainstem).

Signup and view all the flashcards

Medical Diagnosis

The process of identifying a specific disease or medical condition.

Signup and view all the flashcards

Cranial Fossae

The three depressions in the skull base that hold parts of the brain.

Signup and view all the flashcards

Orbit Bony Elements

The bones forming the eye socket, which hold and protect the eye.

Signup and view all the flashcards

Extraocular Muscles

Muscles that control eye movement.

Signup and view all the flashcards

Cranial Nerve Function

Specific functions conveyed by each of the 12 cranial nerves, describing sensory and motor roles.

Signup and view all the flashcards

Orbital Blood Flow

The pathway of blood entering and exiting the orbit, including associated structures.

Signup and view all the flashcards

Eyelid Components

The structures that make up the eyelids and control their opening and closing.

Signup and view all the flashcards

Lacrimal Apparatus

Structures involved in tear production and drainage.

Signup and view all the flashcards

Orbital Autonomic Supply

The nerves that control involuntary functions in the orbit, differentiating sympathetic and parasympathetic functions.

Signup and view all the flashcards

Related Documents

More Like This

Anatomy of the Neck Lesson 4
16 questions
Anatomy Muscles Quiz
120 questions

Anatomy Muscles Quiz

AstonishedYttrium avatar
AstonishedYttrium
Neck Muscles Overview
10 questions

Neck Muscles Overview

SprightlyPentagon avatar
SprightlyPentagon
Use Quizgecko on...
Browser
Browser