Cranial Nerves

Question 1

Function and number of olfactory nerve

Answer 1

CN 1; sensory; sense of smell

Question 2

Function and number of optic nerve

Answer 2

CN 2; sensory; vision

Question 3

Function and number of oculomotor nerve

Answer 3

CN 3; motor; eye movement, pupillary constriction, eyelid movement

Question 4

Function and number of trochlear nerve

Answer 4

CN4; motor; eye movements (intorsion = inward gaze, downward gaze)

Question 5

Function and number of trigeminal nerve

Answer 5

CN5; sensory and motor; somatic sensation from face, mouth, and cornea; chewing muscles

Question 6

Function and number of abducens nerve

Answer 6

CN6; motor; abduction (awau from the nose) or lateral eye movements

Question 7

Function and number of facial nerve

Answer 7

CN 7; sensory and motor, facial expression muscles, anterior tongue taste, salivary and lacrimal glands (tear gland)

Question 8

Function and number of vestibulocochlear (auditory) nerve

Answer 8

CN 8; Sensory, hearing, balance

Question 9

Function and number of glossopharyngeal nerve

Answer 9

CN 9; sensory and motor, sensation from posterior tongue and pharynx, posterior tongue taste, salivary gland, carotid baroreceptors and chemoreceptors

Question 10

Function and number of vagus nerve

Answer 10

CN 10; sensory and motor; gut’s autonomic function, cardiac inhibition, phar/larynx sensation, swallowing, vocal cord muscles

Question 11

Function and number of spinal accessory nerve

Answer 11

CN 11; motor; shoulder and neck muscles

Question 12

Hypoglossal

Answer 12

CN 12: motor, tongue movement