CRanial Nerves and Functions

what is CN I?

olfactory

is CN I sensory or motor (or both), and where is it located?

sensory, cerebrum

What’s the function of CN I?

olfaction (smell)

what is CN II?

optic

is CN II sensory or motor (or both), and where is it located?

sensory, cerebrum

what is the fucntion of CN II?

vision

what is CN III?

oculomotor

is CN III sensory or motor (or both), and where is it located?

motor, midbrain

what is the fucntion of CN III?

eye movement - eyellid elevation, pupillary constriction, lens accommodation

what is CN IV?

trochlear

is CN IV sensory or motor (or both), and where is it located?

motor, midbrain

what is the function of CN IV?

eyelid movement - movement of eyeballs up and down

what is CN V?

trigeminal

is CN V sensory or motor (or both), and where is it located?

both, pons

what is the function of CN V?

sensory - facial sensation, transmits touch, pain, temperature, proprioception throughout the face; tongue

motor - mastication (biting/chewing)

what is CN VI?

abducens

is CN VI sensory or motor (or both), and where is it located?

motor, pontomedullary region

what is the function of CN VI?

eye movement - movement of eyeballs inward and outward

what is CN VII?

facial

is CN VII sensory or motor (or both), and where is it located?

both, pontomedullary region

what is the function of CN VII?

sensory - taste

motor - facial expression, eyes closing, salvation, lacrimation

what is CN VIII?

vestibulocochlear

is CN VIII sensory or motor (or both), and where is it located?

sensory, pontomedullary region

what is the function of CN VIII?

auditory; balance and hearing

what is CN IX?

glossopharyngeal

is CN IX sensory or motor (or both), and where is it located?

both, medulla oblongata

what is the fucntion of CN IX?

sensory - transmits taste from the back of the tongue, touch and pain from the throat, and blood pressure signals from the carotid artery to the brain

motor - swallowing, salvation

what is CN X?

vagus

is CN X sensory or motor (or both), and where is it located?

both, medulla oblongata

what is the function of CN X?

sensory - ear skin, pharynx, larynx, thorax, abdomen, taste/sensation, epiglottis

what is CN XI?

spinal accessory

is CN XI sensory or motor (or both), and where is it located?

motor, medulla oblongata

what is the function of CN XI?

shoulder shrug, head turning

what is CN XII?

hypoglossal

is CN XII sensory or motor (or both), and where is it located?

motor, medulla oblongata

what is the function of CN XII?

tongue movement