Cranial Nerves & Function

Question 1

Olfactory

Answer 1

Sense of smell

Question 2

Optic

Answer 2

Central & Peripheral vision

Question 3

Oculomotor

Answer 3

Eye movement.
Lid elevation.
Pupillary constriction.
Lens accommodation.

Question 4

Trochlear

Answer 4

Eye movement

Question 5

Trigeminal

Answer 5

Sensory perception from skin of face and scalp and mucous membranes of mouth and nose. Muscles of mastication (chewing)

Question 6

Abducens

Answer 6

Eye movement. (Abducted movement)

Question 7

Facial

Answer 7

Pain and temperature from ear area. Deep sensations from the face. Taste from anterior 2/3 of the tongue. Facial expressions. Salivation/ lacrimation (saliva/ tears)

Question 8

Vestibul-ocochlear

Answer 8

Hearing.

Equilibrium.

Question 9

Glosso-pharyn-geal

Answer 9

Pain and temperature from ear. Taste and sensations from posterior 1/3 of the tongue and pharynx skeletal muscles of the throat (swallowing)

Parotid glands. Chemo/baroreceptors

Question 10

Vagus

Answer 10

Pain and temperature from ear. Sensations from pharynx, larynx, thoracic, abdominal viscera.
Swallowing, speech, cough
*ANS~parasympathetic( rest & digest) decreased Heart rate. Increased GI motility

Question 11

“Spinal” Accessory

Answer 11

Skeletal muscles of the pharynx and larynx and sternocleidomastoid and trapezius muscles. Shrugging shoulders. Head turning.

Question 12

Hypoglossal

Answer 12

Skeletal muscles under the tongue. Tongue movement