Cranial Nerve Tests

Question 1

CN I Tests

Answer 1

Owners of hunting dogs may notice deficits, otherwise limited

Question 2

CN II Tests

Answer 2

Menace, PLR, visual following, obstacle navigation, visual placing

Question 3

CN III Tests SE

Answer 3

Ventrolateral strabismus of ipsilateral eye; VOR: no/ slow adduction of globe

Question 4

CN III Tests VE

Answer 4

No/ slow PLR, anisocoria

Question 5

CN IV

Answer 5

extortion or rotation of globe (calf vs cat)

Question 6

CN V1 tests

Answer 6

palpebral reflect (medial canthus), Nasal septum sensation, corneal reflect (autonomous)

Question 7

CN V2 tests

Answer 7

Palpebral reflex (lateral canthus) , sensation to nasal mucosa, pinch upper lip lateral to canine (autonomous)

Question 8

CN V3 test SA

Answer 8

pinch lower lip lateral to canine (autonomous)

Question 9

CN V3 test SE

Answer 9

muscle atrophy; decreased jaw tone and dropped jaw require bilateral loss of fx

Question 10

CN VI Test

Answer 10

medial strabismus; VOR: no/ show abduction; observe globe retraction with corneal stimulation or menace

Question 11

CN VII test SE

Answer 11

palpebral reflex, menace response, Lip droop ( -> drooling food falling form mouth), Ear droop, facial asymmetry, Farm animals only: Ptosis

Question 12

CN VII test VE

Answer 12

schemer tear test

Question 13

CN VII SA

Answer 13

ear movement when concave surface of pinna is tickled

Question 14

CN VIII test

Answer 14

auditory orienting; clients report hearing loss, circling, nystagmus, positional strabismus, head tilt

Question 15

CN IX test SE

Answer 15

gag reflex, dyspagia

Question 16

CN IX test VA

Answer 16

gag reflex

Question 17

CN X test SE

Answer 17

gag reflex, dysphagia, voice change, inspiratory stridor, aspiration

Question 18

CN X test VA

Answer 18

Gag reflex

Question 19

CN XI test

Answer 19

Neck movement, Trapezius Atrophy

Question 20

CN XII test

Answer 20

tongue deviates toward side of lesion, trouble drinking, tongue atrophy