Cranial Nerves

Question 1

Cranial Nerve I

Answer 1

olfactory
smell
pure sensory
not located in the brainstem

Question 2

Cranial Nerve II

Answer 2

Optic
visual input from the retina to the brain
pure sensory
not located in the brainstem

Question 3

Cranial Nerve III

Answer 3

Oculomotor
Controls all eye muscles except the superior oblique and lateral rectus
lens accommodation and pupil constriction
pure motor (somatic and visceral)

Question 4

Cranial Nerve IV

Answer 4

Trochlear
Controls superior oblique muscles of the eye (up and down movement)
pure motor

Question 5

Cranial nerve VI

Answer 5

Abducens
controls lateral rectus muscle of eye (moves eye away from midline)
pure motor

Question 6

Cranial Nerve V

Answer 6

Trigeminal
somatosensory information from the face
muscles for chewing
mixed sensory and motor

Question 7

Cranial nerve VII

Answer 7

facial
muscles for facial expression
lacrimation and salivation
taste from anterior 2/3 of the tongue
mixed sensory and motor

Question 8

Cranial Nerve VIII

Answer 8

Vestibulocochlear
semicircular canals and otolith organs (balance)
cochlea (hearing)
Pure sensory

Question 9

Cranial Nerve IX

Answer 9

Glossopharyngeal
Muscles for swallowing
salivation
carotid body and sinus
taste from the 1/3 of the tongue
mixed sensory and motor

Question 10

Cranial Nerve X

Answer 10

muscles for swallowing and speaking
motor for thoracic and abdominal viscera
sensory for thoracic and abdominal viserca
mixed sensory and motor

Question 11

cranial nerve XI

Answer 11

accessory nerve
muscles for head and neck
pure motor

Question 12

Cranial Nerve XII

Answer 12

Hypoglossal
muscles for tongue
Pure motor