Cranial Nerves Function

Question 1

Olfactory

Answer 1

Smell

Question 2

Optic

Answer 2

Vision

Question 3

Oculomotor

Answer 3

Extrinsic eye muscles. Pupil constrict.

Question 4

Trochlear

Answer 4

Superior oblique eye muscle

Question 5

Trigeminal

Answer 5

Sensory from anterior scalp, nasal cavity, entire face, most of oral cavity, and teeth. Muscles of mastication.

Question 6

Abducens

Answer 6

Lateral rectus eye muscle

Question 7

Facial

Answer 7

Taste from anterior 2/3 of tongue. Muscles of facial expression. Increases lacrimal gland secretion.

Question 8

Vestibulocochlear

Answer 8

Hearing, equilibrium

Question 9

Glossopharyngeal

Answer 9

General sensory and taste from posterior 1/3 of tongue. Increases secretion from parotid salivary gland.

Question 10

Vagus

Answer 10

Visceral sensory information from heart, lungs, and most abdominal organs. Most pharyngeal muscles, all laryngeal muscles. Innervates smooth muscle and glands of heart.

Question 11

Accessory

Answer 11

Trapezius muscle, sternocleidomastoid muscle

Question 12

Hypoglossal

Answer 12

Intrinsic and extrinsic tongue muscles