Head and Neck Anatomy Quiz
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Questions and Answers

The bones of the skull include the neurocranum and the ________

viscerocranium

The optic foramen transmits ________ (vision)

CNII

The cribriform plates of the ethmoid bone transmit fibers of ________ (CNI)

olfactory

The palatine processes are the anterior part of the hard ________

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

Levator Palpebrae superiors → Elevates upper eyelid (innervated by CN III)

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

Orbicularis Oculi a. Closes eyelids & wrinkles forehead b. Palpebral part “gently” closes lids c. Orbital part “tightly” closes lids

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

Tear movement = Lacrimal gland → gravity/ blinking → lacrimal duct → lacrimal sac → nasolacrimal duct EYELIDS 1. protects it from injury & excessive light 2. Keep cornea moist by spreading lacrimal fluid when blinking 3. Interior = palpebral conjuctiva 4. Upper & lower lids (dense band of CT) → provide support for the tissue 5. Tarsal glands: Produce lipid secretion to keep eyelids from sticking 6. Eyelashes → sensing approaching dangers & lubricated by ciliary glands 7. Orbicularis Oculi a. Closes eyelids & wrinkles forehead b. Palpebral part “gently” closes lids c. Orbital part “tightly” closes lids 8. Levator Palpebrae superiors → Elevates upper eyelid (innervated by CN III) VISION 1. Refraction of light & accommodation a. Bending of light rays & alter eye to focus on different objects via changing shape & length of lens 2. Close-up vision → Lens becomes more convex (short & thick) 3. Distant → Lens becomes less convex (long & thin) 4. Convergence → maintain binocular vision & track objects moving towards eyes.

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

Close-up ______ → Lens becomes more convex (short & thick) 3. Distant → Lens becomes less convex (long & thin) 4. Convergence → maintain binocular ______ & track objects moving towards eyes.

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

The inferior orbital fissure is an opening within each orbit formed by the maxillae and ______ bone

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

The infraorbital foramen is an opening under each orbit for the passage of infraorbital nerves and ______

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

The alveolar margin is the oral margin of the maxillae that contains the upper ______

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

The nose includes the external nose and nasal cavity and functions in smell, humidification, respiration, filtration, reception, and eliminating secretions through paranasal sinuses and nasolacrimal ______

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

The external nose consists of cartilage and skin, with nerve supply from the trigeminal nerve (CNV1) ______

Signup and view all the answers

The nasal cavities are divided by the nasal septum and lined with mucous membrane, featuring three projecting conchae (turbinates) for air cleansing and temperature ______

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

Paranasal sinuses, including the ethmoid, sphenoid, frontal, and maxillary sinuses, lighten the weight of the skull and are palpable during physical ______

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

Olfaction involves the olfactory epithelium, olfactory nerves (CNI), bulbs, and tract, contributing to the sense of smell in the ______

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

The ear is responsible for hearing and equilibrium and comprises the external, middle, and inner ______

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

The external ear consists of the auricle, external acoustic meatus, and tympanic membrane, while the middle ear amplifies sound and includes the auditory ossicles and the pharyngotympanic (Eustachian) tube for pressure ______

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

The inner ear consists of the bony and membranous labyrinths, serving acoustic and vestibular functions for ______

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

The lips and mouth are controlled by a series of muscles, with the oral cavity lined with mucous membrane and featuring openings for salivary gland ducts, innervated by the trigeminal nerve (CN ______)

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

Swallowing involves the oral, ______, and esophageal phases, with the ______ phase being autonomic and involving the elevation of the larynx and epiglottis to block the trachea.

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

The ______ joint is the most active joint in the human body.

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

Muscles of mastication include the masseter, temporalis, and medial pterygoid, which elevate the mandible, and the ______, which depresses the mandible to open the mouth.

<p>lateral pterygoid</p> Signup and view all the answers

Muscles of the neck are necessary for movement, chewing, swallowing, and facial expression, with flexion muscles including the sternocleidomastoid, ______, and longissimus capitis.

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

The orbit is a bony socket composed of seven bones that protect the eyeball from injury and contains various components such as the globe, extraocular muscles, ______, tear glands, and ducts.

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

The globe is composed of three layers (tunics) with fluid and gel-like substances, and the outer layer includes the sclera, cornea, and ______.

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

The middle layer of the globe, the vascular layer, includes the choroid, ciliary body, and ______, which control the size of the pupil.

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

The inner layer of the globe is neural and includes the ______, which contains photoreceptors and associated neurons and fibers for vision.

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

The eye movement involves the contraction of the extraocular muscles, which are innervated by specific cranial nerves, and the blood vessels of the eye, including the ______ artery and veins, play a crucial role in supplying and draining blood from the eye.

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

Which bone forms the roof of the nasal cavities and contains olfactory foramina?

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

Which bone contains the optic foramen, transmitting the nerve responsible for vision?

<p>Sphenoid bone</p> Signup and view all the answers

Which bone is located between the nasal and orbital cavity and contains the ethmoidal air cells and superior nasal conchae?

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

Which bone forms the anterior part of the hard palate and the lateral bridge of the nose connecting frontal and nasal bones?

<p>Maxilla bone</p> Signup and view all the answers

What is the function of tarsal glands in the eyelids?

<p>Produce lipid secretion to prevent eyelids from sticking</p> Signup and view all the answers

Which muscle elevates the upper eyelid and is innervated by CN III?

<p>Levator Palpebrae superiors</p> Signup and view all the answers

What is the main function of the orbicularis oculi muscle?

<p>Closes eyelids &amp; wrinkles forehead</p> Signup and view all the answers

What happens to the lens during close-up vision?

<p>It becomes more convex (short &amp; thick)</p> Signup and view all the answers

What is the function of the nose?

<p>Smell and filtration</p> Signup and view all the answers

Which nerve supplies the external nose?

<p>Trigeminal nerve (CN V)</p> Signup and view all the answers

What is the function of paranasal sinuses?

<p>Lightening the weight of the skull</p> Signup and view all the answers

What is the primary responsibility of the ear?

<p>Hearing and equilibrium</p> Signup and view all the answers

What is the function of the middle ear?

<p>Sound amplification</p> Signup and view all the answers

Which nerve innervates the muscles of the lips and mouth?

<p>Trigeminal nerve (CN V)</p> Signup and view all the answers

What is the function of the infraorbital foramen?

<p>Passage of infraorbital nerves and vessels</p> Signup and view all the answers

What is the function of the alveolar margin?

<p>Contains the upper teeth</p> Signup and view all the answers

What is the primary function of the olfactory epithelium and nerves?

<p>Sense of smell</p> Signup and view all the answers

What is the purpose of the paranasal sinuses during physical exams?

<p>Palpable landmarks</p> Signup and view all the answers

What is the function of the nasal cavities?

<p>Air cleansing and temperature control</p> Signup and view all the answers

What is the role of the trigeminal nerve in the oral cavity?

<p>Innervation of oral muscles</p> Signup and view all the answers

Where is the hyoid bone located?

<p>At the level of the 3rd cervical vertebrae</p> Signup and view all the answers

Which bone does not articulate with another bone in the body?

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

Where is the larynx located?

<p>In the anterior neck at the level of C3-C6</p> Signup and view all the answers

Which phase of swallowing involves the elevation of the larynx and epiglottis to block the trachea?

<p>Pharyngeal phase</p> Signup and view all the answers

Which joint is the most active joint in the human body?

<p>Temporomandibular joint</p> Signup and view all the answers

Which muscles are responsible for depressing the mandible to open the mouth?

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

Which muscle serves to tense the skin of the neck and is a muscle of facial expression?

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

What are the components of the orbit?

<p>Globe, extraocular muscles, eyelids, tear glands, and ducts</p> Signup and view all the answers

What are the layers of the globe's outer layer?

<p>Sclera, cornea, and conjunctiva</p> Signup and view all the answers

Which layer of the globe includes the choroid, ciliary body, and iris?

<p>Vascular layer</p> Signup and view all the answers

What is responsible for eye movement?

<p>Contraction of the extraocular muscles</p> Signup and view all the answers

Which blood vessels play a crucial role in supplying and draining blood from the eye?

<p>Ophthalmic artery and veins</p> Signup and view all the answers

What is the function of the tarsal glands in the eyelids?

<p>Produce lipid secretion to prevent eyelids from sticking</p> Signup and view all the answers

Which muscle is responsible for closing the eyelids and wrinkling the forehead?

<p>Orbicularis Oculi</p> Signup and view all the answers

What is the function of the Levator Palpebrae superiors muscle?

<p>Elevates the upper eyelid</p> Signup and view all the answers

What is the primary function of the Orbicularis Oculi muscle?

<p>Closes eyelids &amp; wrinkles forehead</p> Signup and view all the answers

Which bone forms the roof of the nasal cavities and contains olfactory foramina?

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

Which nerve supplies the external nose and is responsible for the sense of smell (olfaction)?

<p>Olfactory nerve (CN I)</p> Signup and view all the answers

What is the primary function of the palatine processes of the maxilla bones?

<p>Forming the anterior part of the hard palate</p> Signup and view all the answers

Which bone is located between the nasal and orbital cavity and contains the ethmoidal air cells and superior nasal conchae?

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

What is the function of the nasal cavities?

<p>Air filtration and temperature control</p> Signup and view all the answers

What is the function of the infraorbital foramen?

<p>Passage of infraorbital nerves and vessels</p> Signup and view all the answers

What is the primary function of the olfactory epithelium and nerves?

<p>Contributing to the sense of smell</p> Signup and view all the answers

What is the primary responsibility of the ear?

<p>Hearing and equilibrium</p> Signup and view all the answers

What is the function of the alveolar margin?

<p>Containing the upper teeth</p> Signup and view all the answers

What is the function of the paranasal sinuses?

<p>Lighten the weight of the skull</p> Signup and view all the answers

Which nerve supplies the external nose?

<p>Trigeminal nerve (CN V)</p> Signup and view all the answers

What is the function of the middle ear?

<p>Amplifies sound and pressure equalization</p> Signup and view all the answers

What is the function of the nose?

<p>Smell, humidification, and respiration</p> Signup and view all the answers

Where is the larynx located?

<p>In the neck</p> Signup and view all the answers

What happens to the lens during close-up vision?

<p>Becomes more convex</p> Signup and view all the answers

What is the primary function of the orbicularis oculi muscle?

<p>Closes eyelids and wrinkles forehead</p> Signup and view all the answers

Where is the hyoid bone located?

<p>At the level of the 3rd cervical vertebrae</p> Signup and view all the answers

What is the most active joint in the human body?

<p>Temporomandibular joint</p> Signup and view all the answers

Which muscle depresses the mandible to open the mouth?

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

Which muscle serves to tense the skin of the neck and is a muscle of facial expression?

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

Where is the larynx located?

<p>In the anterior neck at the level of C3-C6</p> Signup and view all the answers

What is responsible for eye movement?

<p>Contraction of the extraocular muscles</p> Signup and view all the answers

Which bone forms the roof of the nasal cavities and contains olfactory foramina?

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

What is the function of the middle ear?

<p>Amplifies sound</p> Signup and view all the answers

What is the function of the nasal cavities?

<p>Air cleansing and temperature regulation</p> Signup and view all the answers

Which layer of the globe includes the choroid, ciliary body, and iris?

<p>Vascular layer</p> Signup and view all the answers

What happens to the lens during close-up vision?

<p>Becomes more convex (short &amp; thick)</p> Signup and view all the answers

What is the primary responsibility of the ear?

<p>Hearing and equilibrium</p> Signup and view all the answers

Study Notes

Anatomy of the Head and Neck

  • The hyoid bone is located at the level of the 3rd cervical vertebrae and is the only bone in the body that does not articulate with another bone.
  • The larynx, found in the anterior neck at the level of C3-C6, contains the vocal cords and connects the oropharynx with the trachea.
  • Swallowing involves the oral, pharyngeal, and esophageal phases, with the pharyngeal phase being autonomic and involving the elevation of the larynx and epiglottis to block the trachea.
  • The temporomandibular joint is the most active joint in the human body.
  • Muscles of mastication include the masseter, temporalis, and medial pterygoid, which elevate the mandible, and the lateral pterygoid, which depresses the mandible to open the mouth.
  • Muscles of the neck are necessary for movement, chewing, swallowing, and facial expression, with flexion muscles including the sternocleidomastoid, scalene, and longissimus capitis.
  • The platysma muscle, innervated by CNVIII, serves to tense the skin of the neck and is a muscle of facial expression.
  • The orbit is a bony socket composed of seven bones that protect the eyeball from injury and contains various components such as the globe, extraocular muscles, eyelids, tear glands, and ducts.
  • The globe is composed of three layers (tunics) with fluid and gel-like substances, and the outer layer includes the sclera, cornea, and conjunctiva.
  • The middle layer of the globe, the vascular layer, includes the choroid, ciliary body, and iris, which control the size of the pupil.
  • The inner layer of the globe is neural and includes the retina, which contains photoreceptors and associated neurons and fibers for vision.
  • The eye movement involves the contraction of the extraocular muscles, which are innervated by specific cranial nerves, and the blood vessels of the eye, including the ophthalmic artery and veins, play a crucial role in supplying and draining blood from the eye.

Anatomy of the Head and Neck

  • The hyoid bone is located at the level of the 3rd cervical vertebrae and is the only bone in the body that does not articulate with another bone.
  • The larynx, found in the anterior neck at the level of C3-C6, contains the vocal cords and connects the oropharynx with the trachea.
  • Swallowing involves the oral, pharyngeal, and esophageal phases, with the pharyngeal phase being autonomic and involving the elevation of the larynx and epiglottis to block the trachea.
  • The temporomandibular joint is the most active joint in the human body.
  • Muscles of mastication include the masseter, temporalis, and medial pterygoid, which elevate the mandible, and the lateral pterygoid, which depresses the mandible to open the mouth.
  • Muscles of the neck are necessary for movement, chewing, swallowing, and facial expression, with flexion muscles including the sternocleidomastoid, scalene, and longissimus capitis.
  • The platysma muscle, innervated by CNVIII, serves to tense the skin of the neck and is a muscle of facial expression.
  • The orbit is a bony socket composed of seven bones that protect the eyeball from injury and contains various components such as the globe, extraocular muscles, eyelids, tear glands, and ducts.
  • The globe is composed of three layers (tunics) with fluid and gel-like substances, and the outer layer includes the sclera, cornea, and conjunctiva.
  • The middle layer of the globe, the vascular layer, includes the choroid, ciliary body, and iris, which control the size of the pupil.
  • The inner layer of the globe is neural and includes the retina, which contains photoreceptors and associated neurons and fibers for vision.
  • The eye movement involves the contraction of the extraocular muscles, which are innervated by specific cranial nerves, and the blood vessels of the eye, including the ophthalmic artery and veins, play a crucial role in supplying and draining blood from the eye.

Anatomy of the Head and Neck

  • The hyoid bone is located at the level of the 3rd cervical vertebrae and is the only bone in the body that does not articulate with another bone.
  • The larynx, found in the anterior neck at the level of C3-C6, contains the vocal cords and connects the oropharynx with the trachea.
  • Swallowing involves the oral, pharyngeal, and esophageal phases, with the pharyngeal phase being autonomic and involving the elevation of the larynx and epiglottis to block the trachea.
  • The temporomandibular joint is the most active joint in the human body.
  • Muscles of mastication include the masseter, temporalis, and medial pterygoid, which elevate the mandible, and the lateral pterygoid, which depresses the mandible to open the mouth.
  • Muscles of the neck are necessary for movement, chewing, swallowing, and facial expression, with flexion muscles including the sternocleidomastoid, scalene, and longissimus capitis.
  • The platysma muscle, innervated by CNVIII, serves to tense the skin of the neck and is a muscle of facial expression.
  • The orbit is a bony socket composed of seven bones that protect the eyeball from injury and contains various components such as the globe, extraocular muscles, eyelids, tear glands, and ducts.
  • The globe is composed of three layers (tunics) with fluid and gel-like substances, and the outer layer includes the sclera, cornea, and conjunctiva.
  • The middle layer of the globe, the vascular layer, includes the choroid, ciliary body, and iris, which control the size of the pupil.
  • The inner layer of the globe is neural and includes the retina, which contains photoreceptors and associated neurons and fibers for vision.
  • The eye movement involves the contraction of the extraocular muscles, which are innervated by specific cranial nerves, and the blood vessels of the eye, including the ophthalmic artery and veins, play a crucial role in supplying and draining blood from the eye.

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Description

Test your knowledge of the anatomy of the head and neck with this quiz. Explore topics such as the hyoid bone, larynx, swallowing process, temporomandibular joint, muscles of mastication, muscles of the neck, orbit structure, layers of the globe, and eye movement. Sharpen your understanding of these critical anatomical structures and their functions.

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