cranial nerves

I

olfactory

II

optic

III

oculomotor

IV

trochlear

V

trigeminal

VI

abducens

VII

facial

VIII

vestibulocochlear

IX

glossopharyngeal

X

vagus

XI

accessory

XII

hypoglossal

function of olfactory nerve

(sensory)

smell

function of optic nerve

(sensory)

vision

function of vestibulocochlear nerve

(sensory)

hearing and balance

how many cranial nerves are sensory?

3—These carry information to the brain.

Olfactory → smell

Optic → vision

Vestibulocochlear → hearing & balance

how many cranial nerves are motor?

5—These control muscles or glands.

Oculomotor → eye movement, pupil constriction

Trochlear → eye movement (down/in)

Abducens → eye movement (lateral)

Accessory → head & shoulder movement

Hypoglossal → tongue movement

function of oculomotor nerve

(motor)

eye movement, pupil constriction

function of trochlear nerve

(motor)

eye movement (down/in)

function of abducens nerve

(motor)

eye movement (lateral)

function of accessory nerve

(motor)

head & shoulder movement

function of hypoglossal nerve

(motor)

tongue movement

how many cranial nerves are mixed?

4—These have sensory + motor functions.

Trigeminal → facial sensation, chewing

Facial → facial expression, taste

Glossopharyngeal → taste, swallowing

Vagus → organs (heart, digestion), swallowing

function of trigeminal nerve

(mixed)

facial sensation, chewing

function of facial nerve

(mixed)

facial expression, taste

function of glossopharyngeal nerve

(mixed)

taste, swallowing

function of vagus nerve

(mixed)

organs (heart, digestion), swallowing

olfactory nerve

optic nerve

oculomotor nerve

trochlear nerve

trigeminal nerve

abducens nerve

facial nerve

vestibulocochlear nerve

glossopharangyeal nerve

vagus nerve

accessory nerve

hypoglossal nerve