cranial nerves

Question 1

what eye movements does CN III: oculomotor control?

Answer 1

up, down, in, up and in

Question 2

if MMT of traps is poor, what CN could be affected?

Answer 2

CN XI: accessory (innervates traps and SCM)

Question 3

if sensation to the anterior 2/3 of tongue is impaired, what CN is impacted?

Answer 3

CN V: trigeminal

Question 4

if my tongue is deviating to the L, what CN is impaired?

Answer 4

L CN XII: hypoglossal

L CN XII pushes tongue to R. When L CN XII is affected, tongue stats on L side

Question 5

if chewing is impaired, what CN is impacted?

Answer 5

CN V: trigeminal

Question 6

what test is used to determine the side of hearing loss?

Answer 6

Weber’s

Question 7

what CN is affected if a pt has ptosis?

Answer 7

CN III: oculomotor

ptosis = dropping of eyelids

Question 8

what CN is responsible for the eyes looking down and in?

Answer 8

CN IV: trochlear

Question 9

if TASTE of anterior 2/3 of tongue is impacted, what CN is affected?

Answer 9

CN VII: facial

Question 10

If a pt cannot look out (laterally) what CN is affected?

Answer 10

CN VI: Abducens

Question 11

if my uvula is deviating to the R, what CN is impaired?

Answer 11

L CN X: vagus

Question 12

what CN allows the face to move?

Answer 12

CN VII: facial

Question 13

for sensorineural loss, sound is heard (louder/quieter) in (affected/normal) ear

Answer 13

louder
normal

in conduction loss, sound is heard louder in affected ear.

CA NS

C- conductive
A- louder in Affected

N- louder in Normal ear
S- sensorineural

Question 14

if you can’t hear, what CN could be affected?

Answer 14

CN VIII: vestibulocochlear

Question 15

if swallowing is impaired, what CN is affected?

Answer 15

CN IX: glossopharangeal

Question 16

which cranial nerve, if impacted, would result in anosmia (loss of smell)?

Answer 16

CN I: Olfactory

Question 17

if taste and sensation of the posterior 1/3 tongue is impaired, what CN is affected?

Answer 17

CN IX: glossopharangeal

Question 18

what CN shuts the eyes tight?

Answer 18

CN VII: facial

Question 19

for conduction loss, BC is ___ than AC

Answer 19

>

Question 20

what CN is responsible for the gag reflex (motor)?

Answer 20

CN X: vagus

Question 21

how can i remember where the CNs are located ?

Answer 21

CE (1, 2)

MI (3, 4)

PONS (5,6,7,8)

MEDU (9,10,11,12)

Question 22

a PT shines a light into your eye and neither of your pupils constrict. what CN is affected?

Answer 22

CN II: optic

Question 23

CN V and VII both do what to sound?

Answer 23

dampens sound

Question 24

what test is used to determine type of hearing loss?

Answer 24

Rinne’s

Question 25

what are the two types of hearing loss?

Answer 25

conductive
sensorineural