Cranial Nerve Lesions

Question 1

CN I

Answer 1

loss of smell (anosmia), CSF rhinorrhea

Question 2

CN II

Answer 2

loss of pupillary constriction, visual field deficits

Question 3

CN III

Answer 3

dilated pupil, ptosis,

Question 4

CN IV

Answer 4

inability to look down when eye is adducted

Question 5

CN V

Answer 5

loss of pain and touch, parasethesis, deviation of mandible

Question 6

CN VI

Answer 6

eyes fail to move laterally, diplopia on lateral gaze

Question 7

CN VII

Answer 7

bells palsy sx

Question 8

CN VIII

Answer 8

unilateral hearing loss, tennitis

Question 9

CN IX

Answer 9

loss of taste on posterior tongue, loss of sensation on soft palate

Question 10

CN X

Answer 10

sagging of soft palate, deviation of uvula, hoarsness

Question 11

CN XI

Answer 11

paralysis of SCM, drooping shoulder

Question 12

CN XII

Answer 12

protruded tongue deviates toward effected side