Test 5 The 12 Cranial Nerve's Functions

Question 1

Cranial Nerve I - Olfactory

Answer 1

Carries information about the sense of smell.

Question 2

Cranial Nerve II - Optic

Answer 2

Carries visual information from the eyes to the brain.

Question 3

Cranial Nerve III - Oculomotor

Answer 3

Control intrinsic muscles of the eye,

which helps regulate the amount of light entering the eye and aid in focusing on near objects.

Question 4

Cranial Nerve IV - Trochlear

Answer 4

Controls (innervates) the superior oblique muscle (the “pulley” muscle) of the eye.

Question 5

Cranial Nerve V - Trigeminal

Answer 5

Responsible for sensation in the face

responsible for motor functions such as biting and chewing.

Question 6

Cranial Nerve VI - Abducens

Answer 6

Controls the movement of the lateral rectus (eye) in humans.

Question 7

Cranial Nerve VII - Facial

Answer 7

Controls facial expressions

Controls taste sensation from the anterior two-thirds of the tongue.

Salivary glands.

Somatosensory information from the ear.

Question 8

Cranial Nerve VIII - Vestibulocochlear

Answer 8

Responsible for hearing, balance, and brings information from the inner ear to the brain.

A humans sense of equilibrium is determined by this nerve.

Question 9

Cranial Nerve IX - Glossopharyngeal

Answer 9

Provides taste from posterior one-third of the tongue.

Supplies fibers to the tongue, pharynx, and carotid sinus.

Question 10

Cranial Nerve X - Vagus

Answer 10

Provides sensory and motor information to the viscera (glands, digestion, heart rate).

Question 11

Cranial Nerve XI - Accessory

Answer 11

Controls muscles used in head movement (trapezius, and sternocleidomastoid muscles).

Question 12

Cranial Nerve XII - Hypoglossal

Answer 12

Controls muscles of the tongue.