Cranial Nerves

Question 1

name the 12 cranial nerves

Answer 1

CN I Olfactory
CN II Optic
CN III Oculomotor
CN IV Trochlear
CN V Trigeminal 
CN VI Abducent
CN VII Facial
CN VIII Vestibulocochlear 
CN IX Glossopharyngeal
CN X Vagus
CN XI Accessory 
CN XII Hypoglossal

Question 2

function of olfactory

Answer 2

smell

Question 3

function of optic

Answer 3

sight

Question 4

function of oculomotor

Answer 4

motor to eye muscles – medial rectus, inferior oblique, superior rectus, inferior rectus
parasympathetic to ciliary + constrictor pupillae

Question 5

presentation of CN III palsy

Answer 5

eye is down + out
ptosis
fixed, dilated pupil

Question 6

function of trochlear

Answer 6

motor to superior oblique eye muscle

Question 7

presentation of CN IV palsy

Answer 7

defective downward gaze – vertical diplopia

Question 8

function of trigeminal

Answer 8

V1 + V2 - sensory supply to face

V3 - sensory + motor