Recent Lessons

Show all results for ""

The Human Skull

133 Questions

0 Views

The Human Skull

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which part of the skull forms the braincase?

Cranial bones (correct)
Facial bones
Maxillae
Mandible

Which bone forms the lower jaw?

Maxillae
Mandible (correct)
Nasal bone
Vomer

Which bone supports the upper teeth and forms the upper jaw?

Palatine bone
Lacrimal bone
Zygomatic bone
Maxillae (correct)

Which bone attaches to six different bones of the skull and forms the floor of the nose?

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

Which bone protects the eye and orbit?

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

Which bone forms part of the floor of the eye socket?

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

Which bone separates the oral cavity from the nasal cavity?

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

Which bone forms the roof of the mouth?

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

Which bone forms the lateral margins of external nares?

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

Which bone forms the hard palate?

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

Which bone articulates with the temporal bones?

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

Which bone forms the largest sinuses?

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

How many bones does the skull contain?

<p>The skull contains 22 bones.</p> Signup and view all the answers

What are the functions of the mandible?

<p>Forms the lower jaw and articulates with the temporal bones.</p> Signup and view all the answers

What are the functions of the maxillae?

<p>Support upper teeth, form inferior orbital rim, form lateral margins of external nares, form upper jaw and hard palate, and contain maxillary sinuses (largest sinuses).</p> Signup and view all the answers

What is the function of the palatine bone?

<p>Attaches to six different bones of the skull, forms the floor of the nose, the roof of the mouth, and part of the floor of the eye socket. It also separates the oral cavity from the nasal cavity.</p> Signup and view all the answers

What is the function of the nasal bone?

<p>Part of the skeletal framework of the face and cranial skeleton.</p> Signup and view all the answers

What is the function of the zygomatic bone?

<p>Part of the skeletal framework of the face and cranial skeleton.</p> Signup and view all the answers

What is the function of the lacrimal bone?

<p>Part of the skeletal framework of the face and cranial skeleton.</p> Signup and view all the answers

What are the functions of the frontal bones?

<p>Articulate with the maxillae (frontal process) and ethmoid, as well as with all other facial bones except the mandible.</p> Signup and view all the answers

What is the function of the vomer?

<p>Part of the skeletal framework of the face and cranial skeleton.</p> Signup and view all the answers

What are the functions of the palatine bones?

<p>Attach to six different bones of the skull, form the floor of the nose, the roof of the mouth, and part of the floor of the eye socket. They also separate the oral cavity from the nasal cavity.</p> Signup and view all the answers

What is the function of the maxillary sinuses?

<p>They serve to lighten the bone and are contained within the maxillae.</p> Signup and view all the answers

What is the function of the nasal conchae?

<p>Part of the skeletal framework of the face and cranial skeleton.</p> Signup and view all the answers

What does the skull protect?

<p>The brain, entrances to respiratory system, entrance to digestive system</p> Signup and view all the answers

How many bones does the skull contain?

<p>22</p> Signup and view all the answers

What are the functions of the cranial bones?

<p>Form the braincase or cranium</p> Signup and view all the answers

What are the functions of the facial bones?

<p>Protect and support entrances to digestive and respiratory tracts</p> Signup and view all the answers

What are the functions of the mandible?

<p>Forms the lower jaw, articulates with the temporal bones</p> Signup and view all the answers

What are the functions of the maxillae?

<p>Support upper teeth, form inferior orbital rim, form lateral margins of external nares, form upper jaw and hard palate, contain maxillary sinuses (largest sinuses)</p> Signup and view all the answers

What bone forms the largest sinuses?

<p>Maxillae</p> Signup and view all the answers

What is the function of the palatine bone?

<p>Attaches to six different bones of the skull, forms the floor of the nose, the roof of the mouth, and part of the floor of the eye socket, separates the oral cavity from the nasal cavity</p> Signup and view all the answers

What is the function of the orbital rim?

<p>Protects eye and orbit</p> Signup and view all the answers

What is the function of the maxillary sinuses?

<p>To lighten bone</p> Signup and view all the answers

What does the palatine bone separate?

<p>The oral cavity from the nasal cavity</p> Signup and view all the answers

What bone attaches to the back of the palatine bone?

<p>Soft palate</p> Signup and view all the answers

How many bones does the skull contain?

<p>The skull contains 22 bones.</p> Signup and view all the answers

What are the functions of the maxillae?

<p>Support upper teeth, form inferior orbital rim, form lateral margins of external nares, form upper jaw and hard palate, and contain maxillary sinuses (largest sinuses).</p> Signup and view all the answers

What are the functions of the mandible?

<p>Forms the lower jaw and articulates with the temporal bones.</p> Signup and view all the answers

What is the function of the palatine bone?

<p>Attaches to six different bones of the skull, forms the floor of the nose, the roof of the mouth, and part of the floor of the eye socket, and separates the oral cavity from the nasal cavity.</p> Signup and view all the answers

What are the marks of the maxillae?

<p>Orbital rim (protects eye and orbit) and maxillary sinuses (to lighten bone).</p> Signup and view all the answers

What are the facial bones of the skull?

<p>Mandible, maxillae, nasal bone, palatine bone, nasal conchae, vomer, zygomatic bone, and lacrimal bone.</p> Signup and view all the answers

What bones form the cranial skeleton?

<p>Cranial bones, which form the braincase or cranium.</p> Signup and view all the answers

What is the function of the facial bones?

<p>Protect and support entrances to the digestive and respiratory tracts.</p> Signup and view all the answers

What is the skeletal framework that contains bones of the face and cranial skeleton?

<p>The skull.</p> Signup and view all the answers

What does the palatine bone separate?

<p>The oral cavity from the nasal cavity.</p> Signup and view all the answers

What is the articulation of the maxillae with other bones?

<p>Frontal bones (frontal process), ethmoid, with one another, and all other facial bones except the mandible.</p> Signup and view all the answers

What is the function of the frontal bones in relation to the maxillae?

<p>Articulation with the frontal bones (frontal process).</p> Signup and view all the answers

Describe the functions and articulations of the zygomatic bones in the skull.

<p>The zygomatic bones contribute to the rim and lateral wall of the orbit and form part of the zygomatic arch. They articulate with the sphenoid, frontal bone, temporal bones, and maxillae.</p> Signup and view all the answers

What are the functions and articulations of the lacrimal bones in the skull?

<p>The lacrimal bones, as the smallest facial bones, form part of the medial wall of the orbit. They articulate with the frontal bone, maxillae, and ethmoid.</p> Signup and view all the answers

Explain the functions and articulations of the hyoid bone in the skull.

<p>The hyoid bone supports the larynx and attaches muscles of the larynx, pharynx, and tongue. Its lesser horns articulate with the styloid processes of the temporal bones.</p> Signup and view all the answers

Discuss the functions and contributions of the ethmoid bone to the formation of the cranial cavity, nasal septum, and orbital cavity walls.

<p>The ethmoid bone is a complex bone that constitutes parts of the formation of the cranial cavity, nasal septum, and orbital cavity walls. It is more complex than the ethmoid bone and is a major contributor to cranial structures with many foramina to allow nerves to pass through.</p> Signup and view all the answers

How many bones form the cranial skeleton and what are their names?

<p>The cranial skeleton is formed by 8 bones: frontal, parietal (2), occipital, temporal (2), sphenoid, and ethmoid.</p> Signup and view all the answers

What is the function of the foramen magnum?

<p>The foramen magnum is the opening for the spinal cord and the beginning of the medulla oblongata.</p> Signup and view all the answers

Which bones articulate with the temporal bone, and how are they connected?

<p>The temporal bone articulates with the occipital, parietal, and sphenoid bones. It is connected to the occipital bone by the occipitomastoid suture, and to the parietal bone by the squamous suture.</p> Signup and view all the answers

Name the four segments of the temporal bone and briefly describe the features of each segment.

<p>The four segments of the temporal bone are squamous portion, tympanic portion, petrous portion, and mastoid portion. The squamous portion includes the roof of the external auditory meatus, zygomatic process, and mandibular fossa. The tympanic portion forms the anterior and inferior walls of the external auditory meatus. The petrous portion includes the cochlea and semicircular canals. The mastoid portion contains air cells and the mastoid process.</p> Signup and view all the answers

What are the important functions of teeth?

<p>Teeth are important for mastication and provide articulatory service for many speech sounds.</p> Signup and view all the answers

Explain the term 'occlusion' and its significance in the oral-peripheral examination of teeth.

<p>Occlusion refers to the process of bringing the upper and lower teeth into contact. Checking the occlusion type and dental orientation is a central part of the oral-peripheral examination of teeth.</p> Signup and view all the answers

Name one function of the velum.

<p>The velum is the movable muscle mass separating the oral and nasal cavity and is involved in resonance when the mandible is depressed.</p> Signup and view all the answers

What are the divisions of the pharyngeal cavity?

<p>The pharyngeal cavity can be divided into nasopharynx, oropharynx, and laryngopharynx.</p> Signup and view all the answers

What is the function of the buccal cavity in speech production?

<p>The buccal cavity plays a role in resonance when the mandible is depressed and is involved in high pressure consonant production.</p> Signup and view all the answers

What are the limits of the oral cavity?

<p>The oral cavity is limited anteriorly and laterally by the teeth and alveolar processes, superiorly by the hard and soft palate, posteriorly by the palatoglossal arch, and inferiorly by the muscular floor.</p> Signup and view all the answers

What are the muscles of the tongue responsible for articulatory gestures?

<p>The extrinsic and intrinsic muscles of the tongue are responsible for articulatory gestures.</p> Signup and view all the answers

Name one function of the nasal cavity.

<p>The nasal cavity is involved in mastication and deglutition.</p> Signup and view all the answers

What are the functions of the intrinsic muscles of the tongue?

<p>The intrinsic muscles of the tongue provide fine graded control of the articulatory gestures.</p> Signup and view all the answers

What is the function of the pharyngeal cavity in speech production?

<p>The pharyngeal cavity is lined with mucous and muscle contraction can affect the size of the tube and the closure of the velopharyngeal port.</p> Signup and view all the answers

What is the major function of the tongue?

<p>The major function of the tongue is mastication and deglutition.</p> Signup and view all the answers

What is the function of the velopharyngeal port?

<p>The velopharyngeal port can be affected by muscle contraction and is involved in speech production.</p> Signup and view all the answers

What are the divisions of the nasal cavity?

<p>The nasal cavity is divided by the nasal septum.</p> Signup and view all the answers

Name one muscle of the face and mouth involved in the movement of articulators.

<p>The lips and the muscles of the face are involved in the movement of articulators during speech production.</p> Signup and view all the answers

Which portion of the temporal bone includes the cochlea and semicircular canals?

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

What is the central part of the oral-peripheral examination of teeth?

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

What are the important functions of teeth?

<p>Aiding in mastication and articulatory service for speech sounds (A)</p> Signup and view all the answers

Which cavity is the most important for speech mechanism?

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

Which muscle separates the oral and nasal cavity?

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

Where is the buccal cavity located in relation to the oral cavity?

<p>Lateral to the oral cavity (A)</p> Signup and view all the answers

Which part of the vocal tract can affect the size of the tube and the closure of the velopharyngeal port?

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

What is the main function of the tongue?

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

Which muscle of the tongue elevates the tip of the tongue?

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

What is the role of the buccal cavity in speech production?

<p>High pressure consonant production (C)</p> Signup and view all the answers

What structures make up the nasal septum?

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

Which muscles provide fine graded control of the articulatory gestures of the tongue?

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

What is the action of the transverse muscle of the tongue?

<p>Narrows and elongates the tongue (A)</p> Signup and view all the answers

What is the main function of the velum?

<p>Separating the oral and nasal cavity (B)</p> Signup and view all the answers

Which cavity is lined with mucous and can be affected by muscle contraction?

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

Which muscle of mastication is the most powerful?

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

Which muscle moves the tongue back and up?

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

Which muscle depresses the soft palate if its inferior attachment is fixed?

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

Which muscle of mastication helps to protrude the mandible?

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

Which muscle pulls the middle part of the tongue down and protrudes the tongue?

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

Which muscle of mastication forms a sling along with the masseter around the mandible?

<p>Medial (internal) pterygoid (B)</p> Signup and view all the answers

Which muscle of mastication helps to depress the mandible if the hyoid bone is fixed?

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

Which muscle of mastication is located medially to the inferior longitudinal muscle, hyoglossus, and styloglossus?

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

Which muscle of mastication attaches from the mastoid process of the temporal bone to the hyoid bone?

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

Which muscle moves the tongue back and down?

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

Which muscle of mastication elevates the mandible?

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

Which muscle of mastication helps to elevate and pull the mandible back?

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

What are the two types of tongue muscles and their functions?

<p>Intrinsic muscles (pull tip of tongue down, assist in shortening the tongue, turn tongue towards contracted side and downward) and extrinsic muscles (move the tongue as a unit, set general tongue posture for articulation)</p> Signup and view all the answers

Name the four extrinsic muscles of the tongue and their functions.

<p>Palatoglossus (elevates back of tongue, depresses soft palate), styloglossus (moves tongue back and up), hyoglossus (moves tongue back and down), genioglossus (pulls middle part of tongue down, protrudes the tongue)</p> Signup and view all the answers

What are the functions of the muscles of mastication?

<p>Mandibular elevators (elevate the jaw) and mandibular depressors (depress the jaw)</p> Signup and view all the answers

Name the mandibular elevators and describe their functions.

<p>Masseter (elevates the jaw), temporalis (elevates and pulls the mandible back), medial (internal) pterygoid (elevates the mandible, side to side movement of the mandible)</p> Signup and view all the answers

Name the mandibular depressors and describe their functions.

<p>Digastric (anterior belly depresses the jaw), mylohyoid (helps to depress the mandible), geniohyoid (depresses the mandible if the hyoid bone is fixed), lateral (external) pterygoid (helps to protrude the mandible, side to side movement of the mandible)</p> Signup and view all the answers

What is the function of the masseter muscle?

<p>Elevates the jaw</p> Signup and view all the answers

Where does the styloglossus muscle have its superior and inferior attachments, and what is its function?

<p>Superior attachment to the styloid process, inferior attachment to sides of the tongue; function: moves the tongue back and up (elevates and retracts)</p> Signup and view all the answers

Describe the functions of the digastric muscle.

<p>Two belly muscle, anterior belly depresses the jaw</p> Signup and view all the answers

What is the function of the mylohyoid muscle?

<p>Helps to depress the mandible</p> Signup and view all the answers

What is the function of the geniohyoid muscle?

<p>Depresses the mandible if the hyoid bone is fixed</p> Signup and view all the answers

Where does the lateral (external) pterygoid muscle attach and what is its function?

<p>From lateral pterygoid plate of the sphenoid bone to the mandible; helps to protrude the mandible, side to side movement of the mandible</p> Signup and view all the answers

What is the function of the temporalis muscle?

<p>Elevates and pulls the mandible back</p> Signup and view all the answers

Name two muscles of the pharynx and describe their functions.

<p>Two muscles of the pharynx are the Stylopharyngeus and the Palatopharyngeus. The Stylopharyngeus raises and widens the pharynx during swallowing, while the Palatopharyngeus forms the posterior faucial pillar of the palatoglossal arch and helps to lift the pharynx during swallowing.</p> Signup and view all the answers

What is the function of the Eustachian tube (ET)?

<p>The Eustachian tube (ET) is a tube from the middle ear to the nasopharynx. Its opening is near the palatine muscle and it allows the pressure in the middle ear to equalize with the atmospheric pressure, helping to ventilate and drain the middle ear of any excess fluid.</p> Signup and view all the answers

Name two muscles of the soft palate (velum) and describe their functions.

<p>Two muscles of the soft palate (velum) are the Tensor veli palatini and the Levatorvelipalatini. The Tensor veli palatini, when contracted, pulls the tissue of the pharynx away from the Eustachian tube (ET), causing the ET to open. The Levatorvelipalatini forms the muscular bulk of the soft palate and pulls the velum up and slightly posteriorly.</p> Signup and view all the answers

Name three muscles of the face and describe their functions.

<p>Three muscles of the face are the Orbicularis oris, which is responsible for puckering the lips, the Risorius, which helps to retract the angle of the mouth, and the Buccinator, which is involved in compressing the cheeks against the teeth during chewing or blowing.</p> Signup and view all the answers

What are the functions of the Orbicularis oris superior (OOS) and Orbicularis oris inferior (OOI)?

<p>The Orbicularis oris superior (OOS) is the main muscle mass of the upper lip, while the Orbicularis oris inferior (OOI) is the main muscle mass of the lower lip. Both muscles are responsible for controlling the movements of the lips.</p> Signup and view all the answers

Name two muscles inserting into the upper lip and describe their functions.

<p>Two muscles inserting into the upper lip are the Zygomatic major, which is responsible for superior and lateral movement of the lip, and the Levator anguli oris, which elevates the upper lip at the angle.</p> Signup and view all the answers

What is the function of the Mentalis muscle?

<p>The Mentalis muscle helps to elevate and wrinkle the skin of the chin, as well as protrude and elevate the lower lip.</p> Signup and view all the answers

What is the function of the Platysma muscle?

<p>The Platysma muscle helps to depress the lower lip and angle of the mouth, as well as tense the skin of the neck and anterior chest wall.</p> Signup and view all the answers

Which muscle is important for compensation when laryngectomy?

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

What is the function of the Tensor veli palatini muscle?

<p>Pull the tissue of the pharynx away from Eustachian tube (C)</p> Signup and view all the answers

Which muscle forms the muscular bulk of the soft palate?

<p>Levator veli palatini (B)</p> Signup and view all the answers

Which muscle is responsible for raising and widening the pharynx during swallowing?

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

Which muscle helps to lift the pharynx during swallowing?

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

Which muscle is NOT a muscle of the soft palate?

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

Which muscle is responsible for forming the posterior faucial pillar of the palatoglossal arch?

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

Which muscle is attached to the styloid process and the posterior wall of the pharynx?

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

Which muscle lowers the lower lip?

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

Which muscle elevates the lower lip and wrinkle the chin?

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

Which muscle moves the angle of the mouth laterally?

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

Which muscle covers the anterior and lateral parts of the neck?

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

Name two muscles inserting into the lower lip and describe their functions?

<p>Depressor labii inferioris: Lowers the lower lip. Depressor anguli oris: Everts the lower lip.</p> Signup and view all the answers

What are the functions of the Platysma muscle?

<p>Elevate the lower lip, wrinkle the chin, and evert the lower lip.</p> Signup and view all the answers

Describe the functions of the Transverse muscle and Risorius (RIS) in relation to the lower lip?

<p>Transverse muscle: Moves the angle laterally. Risorius (RIS): Draws the angles laterally and flattens the cheeks.</p> Signup and view all the answers

What are the vegetative and non-vegetative functions of the muscles related to the oral cavity?

<p>Vegetative function: Respiration, Digestion. Non-vegetative function: Affect resonance of speech, Modification of sounds, Production of sounds, Facial expressions.</p> Signup and view all the answers

More Like This

The Human Skull

5 questions

The Human Skull

StunnedCarnelian

The Human Skull Anatomy Quiz

10 questions

The Human Skull Anatomy Quiz

ReliablePanFlute

The Human Skull Structure

5 questions

The Human Skull Structure

IntelligibleTopology

Human Anatomy: The Skull and Bones

24 questions

Human Anatomy: The Skull and Bones

StylishBigfoot

Use Quizgecko on...

Browser