The Nervous System Cranial Nerves

Question 1

Olfactory ( I )

Answer 1

Transports impulses for sense of smell

Question 2

Optic ( II )

Answer 2

Carries impulses for sense of sight

Question 3

Oculomotor ( III )

Answer 3

Motor impulses for eye muscle movement and the pupil of the eye

Question 4

Trochlear ( IV )

Answer 4

Controls superior oblique muscle of eye on each side

Question 5

Trigeminal ( V )

Answer 5

Carries sensory facial impulses and controls muscles for chewing; branches into eyes, forehead, upper and lower jaw

Question 6

Abducens ( VI )

Answer 6

Controls an eyeball muscle to turn eye to side

Question 7

Facial ( VII )

Answer 7

Controls facial muscles for expression, salivation, and taste on two-thirds of tongue (anterior)

Question 8

Vestibulocochlear ( VIII )

Answer 8

Responsible for impulses of equilibrium and hearing; also called ‘auditory nerve’

Question 9

Glossopharyngeal ( IX )

Answer 9

Carries sensory impulses from pharynx (swallowing) and taste on one-third of tongue

Question 10

Vagus ( X )

Answer 10

Supplies most organs in abdominal and thoracic

cavities

Question 11

Accessory ( XI )

Answer 11

Controls the neck and shoulder muscles

Question 12

Hypoglossal ( XII )

Answer 12

Controls tongue muscles