Cranial Nerves

Question 1

CN I

Answer 1

olfactory

sensory

smell

test: changes in smell

Question 2

CN II

Answer 2

optic

sensory

vision

test: changes in vision, peripheral vision screen, pupil light reflex (II,III both)

Question 3

CN III

Answer 3

oculomotor

motor

eye movement

test: oculomotor ROM ( H test with pen)
** grouped with IV, VI

Question 4

CN IV

Answer 4

trochlear

motor

eye movement

test: oculomotor ROM ( H test with pen)
** grouped with III, VI

Question 5

CN V

Answer 5

trigeminal

motor + sensory

facial sensory + mastication

test: facial sensation (forehead/cheek/chin) and muscle of mastication

Question 6

CN VI

Answer 6

abducens

motor

abducts eye

test: oculomotor ROM ( H test with pen)
** grouped with III, VI

Question 7

CN VII

Answer 7

facial

motor + sensory

facial expression + taste

test: facial expression (eye brow raise, eyes shut, smile, frown etc)

Question 8

CN VIII

Answer 8

vestibulocochlear

sensory

hearing + balance

test: hearing screen (finger rubbing)

Question 9

CN IX

Answer 9

glossopharyngeal

motor + sensory

taste, gag reflex

test: palate elevation + uvula deviation
(say AHH)
** grouped with X

Question 10

CN X

Answer 10

vagus

motor + sensory

gag reflex + parasympathetic

test: palate elevation + uvula deviation
(say AHH)
** grouped with X

Question 11

CN XI

Answer 11

accessory

motor

shoulder elevation + head rotation

test: resisted shoulder shrug + head turn

Question 12

CN XII

Answer 12

hypoglossal

motor

swallowing, speech

test: tongue out in midline