Anatomy Quiz 5

Olfactory Nerve

What is the Anatomical Name of CN I?

Function of Olfactory Nerve (CN I)

smells

loss of smell

What is Anosmia?

anosmia

What are the clinical applications of Olfactory nerve (CN I)?

Sensory

What is the Nervous Function of Olfactory Nerve (CN I)?

Olfactory Nerve (CN I)

Which cranial nervous passes through the cribriform plate of the ethmoid bone?

Olfactory Bulb

ID Structure

Optic Nerve

What is the Anatomical Name of CN II?

Functions of Optical Nerve (CN II)

vision

sensory

What is the Nervous Function of Optic Nerve (CN II)?

loss of sight

What is Anopsia?

anopsia

What are the clinical applications of Optic Nerve (CN II)?

Optic Nerves (CN II) 

What nerve does Anosmia affect?

Optic Nerve (CN II)

Which Cranial Nerve passes through the optical canal of the sphenoid bone?

Optic Nerve (CN II)

ID Structure

Oculomotor Nerve

What is the Anatomical Name of CN III?

Functions of Oculomotor Nerve (CN III)

controls a group of muscles responsible for movement of the eyeball and eyelid (m)

accommodation of lens for near vision (ps)

constriction of the pupil (ps)

clinical applications of Oculomotor Nerve (CN III)

strabismus, diplopia, and ptosis

Strabismus

a condition in which the eyes are not properly aligned with each other

diplopia

creates double vision

ptosis

having droopy eyelids

Oculomotor Nerve (CN III)

ID Structure

motor and parasympathetic

What are the Nervous Functions of Oculomotor Nerve (CN III)?

Trochlear Nerve

What is the Anatomical Name of the CN IV?

Functions of Trochlear Nerve (CN IV)

controls the superior oblique muscle (involved with movement of the eyeball) (m)

clinical applications of the Trochlear Nerve (CN IV)

strabismus and diplopia

Trochlear Nerve (CN IV)

ID Structure

motor

What are the Nervous Functions of the Trochlear Nerve?

Trigeminal Nerve

What is the Anatomical Term for CN V?

Functions of Trigeminal Nerve (CN V)

supplies “chewing muscles” (muscle of mastication) (m)

sensation to the face (s)

Trigeminal Nerve (CN V)

ID Structure

Clinical Applications of Trigeminal Nerves (CN V)

loss of muscle function and loss of facial sensation

motor and sensory

What is the Nervous Function of Trigeminal Nerve (CN V)?

Abducent Nerve

What is the Anatomical Name of CN VI?

Functions of the Abducent Nerve (CN VI)

controls the lateral rector muscle (involved with movement of the eyeball) (m)

clinical applications of aducent Nerve (CN VI)

strabismus and diplopia

abducent nerve (CN VI)

ID Structure

motor

What are the Nervous Functions of abducent nerve (CN VI)?

facial nerve

What is the Anatomical name of CN VII?

Functions of facial nerve (CN VII)

supplies muscles of “facial expression” (m)

supplies taste to anterior 2/3 of tongue (s)

clinical applications of facial nerve (CN VII)

facial (Bell’s palsy) (m)

loss of taste on anterior 2/3 of tongue (s)

weakness or paralysis to one side of the face

What is Bell’s palsy?

facial nerve (CN VII)

ID Structure

motor and sensory

What are the Nervous Functions of facial nerve (CN VII)?

vestibulocochlear nerve

What is the anatomical name of CN VIII?

Functions of vestibulocochlear nerve (CN VIII)

vestibular branch: equilibrium (s)

cochlear branch: hearing (s)

clinical applications of the vestibulocochlear nerve (CN VIII)

vestibular branch: vertigo

cochlear branch: tinnitus

vertigo

a sensation of spinning or whirling, where the person or their surroundings appear to be moving

tinnitus

hearing noises like ringing, buzzing, or roaring in your ears when there is no external sound source

vestibulocochlear nerve (CN VIII)

ID Structure

sensory

What are the nervous functions of vestibulocochlear nerve (CN VIII)?

glossopharyngeal nerve

What is the anatomical name of CN IX?

Functions of glossopharyngeal nerve (CN IX)

taste on posterior 1/3 tongue (s)

sensation to throat (s)

supplies muscles involved with swallowing (m)

clinical applications of glossopharyngeal nerve (CN IX)

loss of taste on posterior 1/3 of tongue

decreased sensation to throat

difficulty swallowing

glossopharyngeal nerve (CN IX)

ID Structure

motor and sensory

what is the nervous functions of glossopharyngeal nerve (CN IX)?

olfactory nerve (CN I) and optic nerve (CN II)

which cranial nerves are in the cerebrum?

oculomotor nerve (CN III) and trochlear nerve (CN IV)

which cranial nerves are in the midbrain?

trigeminal nerve (CN V), abducent nerve (CN VI), facial nerve (CN VII), and vestibulocochlear nerve (CN VIII)

which cranial nerves are in the pons?

glossopharyngeal nerve (CN IX), vagus nerve (CN X), accessory nerve (CN XI), and hypoglossal nerve (CN XII)

which cranial nerves are in the medulla oblongata?

vagus nerve

what is the anatomical name of CN X?

functions of vagus nerve (CN X)

sensation to throat (s)

supplies muscles involved with swallowing (m)

carries parasympathetic information to thorax and abdomen (ps)

clinical applications of vagus nerve (CN X)

decreases sensation to throat

difficulty swallowing

loss of parasympathetic information in thorax and abdomen

vagus nerve (CN X)

ID Structure

sensory, motor, and parasympathetic

what is the nervous functions of vagus nerve (CN X)?

accessory nerve

what is the anatomical name of CN XI?

functions of accessory nerve (CN XI)

supplies the trapezius and sternocleidomastoid muscles (m)

clinical application of accessory nerve (CN XI)

loss of muscle function

accessory nerve (CN XI)

ID Structure

motor

what are the nervous functions of accessory nerve (CN XI)?

hypoglossal nerve

What is the anatomical term for CN XII?

functions of hypoglossal nerve (CN XII)

supplies muscles responsible for movement of tongue (m)

clinical applications of hypoglossal nerve (CN XII)

difficulty chewing, speaking, and swallowing

hypoglossal nerve (CN XII)

ID Structure

motor

what is the nervous function of hypoglossal nerve (CN XII)?

gustatory (taste) pathway

when food chemicals (dissolved by saliva) come into contact with taste buds, action potentials are generated

facial nerves (CN VII) and glossopharyngeal nerves (CN IX)

name all the nerves that detect taste on tongue

accessory structures of the eye

the eyelids, conjunctiva, lacrimal gland, and extrinsic eye muscles

functions of eyelids (palpebrae)

gives protection to the eye

spreads tears when we blink

orbicularis oculi and levator palpebrae superioris

what major muscles are associated with moving eyelids?

orbicularis oculi

muscle that closes the eyelids

levator palpebrae superioris

muscle that opens upper eyelid

involved with ptosis

orbicularis oculi

ID structure

levator palpebrae superioris

ID Structure

lacrimal glands

produces tears

tears

lubricates and cleans the eye

superior rectus

muscle that elevates the eye

oculomotor nerve (CN III)

which nerve supplies the superior rectus?

superior rectus

ID Structure

inferior rectus

muscle that depresses eyeball

oculomotor (CN III)

which cranial nerve supplies the inferior rectus?

inferior rectus

ID Structure

medial rectus

muscle that move eyeball medially

oculomotor (CN III)

which cranial nerve supplies the medial rectus?

medial rectus

ID Structure

levator palpebrae superioris

muscle that opens upper eyelid

oculomotor (CN III)

which cranial nerve runs to the levator palpebrae superioris?

Levator palpebrae superioris

ID Structure

inferior oblique

muscle that elevates and turns eyeball laterally

oculomotor (CN III)

which cranial nerve supplies the inferior oblique?