Cranial Nerves

Question 1

CN 1 - Olfactory

Answer 1

sniffing a familiar odor

Question 2

CN 2 - Optic

Answer 2

reading a chart from a distance

Question 3

CN 3 - Oculomotor

Answer 3

following an object with eyes as it moves vertically, horizontally, and diagonally.
Light reflex

Question 4

CN 4 - Trochlear

Answer 4

following an object moved in an inferior direction

Question 5

CN 5 - Trigeminal

Answer 5

Sensory component - sharp/dull identification

Motor component - protrusion, retrusion, and lateral deviation of mandible

Question 6

CN 6 - Abducens

Answer 6

abduct eyes without rotation head.

Question 7

CN 7 - Facial

Answer 7

Sensory component - distinguish between sweet and salty substances placed on anterior portion of tongue.
Motor component - manual muscle test on facial expression (cheeks puffed, forehead wrinkled, etc)

Question 8

CN 8 - Vestibulocochlear

Answer 8

hearing ticking watch or fingers rubbing together

Rinne test or Weber test

Question 9

CN 9 - Glossopharyngeal

Answer 9

Motor component - gag reflex

Sensory component - ability to distinguish taste on posterior portion of tongue

Question 10

CN 10 - Vagus

Answer 10

gag reflex

Question 11

CN 11 - Accessory

Answer 11

MMT of shoulder shrug (traps)

Question 12

CN 12 - Hypoglossal

Answer 12

Protrude tongue straight out