Cranial Nerves

Question 0

Test visual fields for this nerve

Answer 0

CNII Optic

Question 1

Test this nerve with familiar odors

Answer 1

CN 1 Olfactory

Question 2

Nerve tested by upward, downward, and medial gaze and reaction to light

Answer 2

CN III - Oculomotor

Question 3

Superior oblique muscle of eyeball - downward and lateral gaze

Answer 3

CN IV - Trochlear

Question 4

Innervates muscles of mastication, face sensation, clench teeth push down on chin to separate jaw

Answer 4

V - Trigeminal

Question 5

Lateral gaze, lateral rectus muscle of eyeball

Answer 5

VI - Abducens

Question 6

Senses: anterior taste on tongue; motor - facial muscles, lacrimal, submandibular, and sublingual glands - test close eyes tight, smile and show teeth, whistle, puff cheeks, id familiar tastes - sweet sour

Answer 6

VII - Facial

Question 7

Hearing and balance; hear watch ticking, bal and coordination tests

Answer 7

VIII - Vestibulocochlear

Question 8

Taste on posterior tongue, parotid gland, select muscle of pharynx. Test - gag reflex and ability to swallow

Answer 8

IX - Glossopharyngeal

Question 9

Touch, pain: Pharynx, larynx, bronchi
Taste: Tongue, epiglottis,
test: gag reflex, ability to swallow, say “Ahhh”

Answer 9

X - Vagus

Question 10

Resist shoulder shrug; SCM, Upper Traps

Answer 10

XI - Accessory

Question 11

Muscles of tongue

Tongue protrusion - if injured tongue deviates toward injured side

Answer 11

XII - Hypoglossal