Cranial Nerves

Question 1

CN 1 OLFACTORY

Function & Test…

Answer 1

Function: Sense of smell

Test: have pt identify scent with eyes closed

Question 2

CN 2 OPTIC

FUNCTION & TEST…

Answer 2

Function: Visual Acuity

Test: use Snellen chart

Question 3

CN 3 OCULOMOTOR

FUNCTION & TEST…

Answer 3

Function: eye/eyelid movement and pupil size

Test: assess PERRLA w/ penlight

Question 4

CN 4 TROCHLEAR

FUNCTION & TEST…

Answer 4

Function: downward/lateral eye movement

Test: ask pt to follow penlight laterally w/eyes

Question 5

CN 5 TRIGEMINAL

FUNCTION & TEST…

Answer 5

Function: mastication (motor) and facial sensation (sensory)

Test: touch pt’s face w/cotton ball and ask them to confirm when they feel your touch

Question 6

CN 6 ABDUCENS

FUNCTION & TEST…

Answer 6

Function: lateral eye movement

Test: ask pt to follow penlight laterally w/thier eyes

Question 7

CN 7 FACIAL

FUNCTION & TEST…

Answer 7

Function: facial expressions

Test: ask pt to frown/smile/raise eyebrows

Question 8

CN 8 ACOUSTIC

FUNCTION & TEST…

Answer 8

Function: hearing and balance

Test: assess pt’s gait, perform whisper test

Question 9

CN 9 GLOSSOPHARYNGEAL

FUNCTION & TEST…

Answer 9

Function: gagging/swallowing (motor)
Sour/bitter taste (sensory)

Test: ask pt to swallow some water

Question 10

CN 10 VAGUS

FUNCTION & TEST…

Answer 10

Function: swallowing/speaking (motor)
Facial sensation (sensory)

Test: test gag reflex

Question 11

CN 11 ACCESSORY

FUNCTION & TEST…

Answer 11

Function: neck and shoulder strength

Test: ask pt to shrug shoulders

Question 12

CN 12 HYPOGLOSSAL

FUNCTION & TEST…

Answer 12

Function: tongue movement

Test: ask pt to stick out thier tongue

Question 13

How many cranial nerves do we have?

Answer 13

12

Question 14

What are the 12 cranial nerves

Answer 14

1. OLFACTORY
2. OPTIC
3. OCULOMOTOR
4. TROCHLEAR
5. TRIGEMINAL
6. ABDUCENS
7. FACIAL
8. VESTIBULOCOCHLEAR
9. GLOSSOPHARYNGEAL
10. VAGUS
11. ACCESSORY
12. HYPOGLOSSAL

Question 15

Put cranial nerves in order of 1-12 and know if they are…..

Answer 15

S=sensory
M=motor
B=both

Question 16

Remember mnemonic to know if it is sensory, motor, or both….

(Make sure CN are in order from 1-12, then line up mnemonic)

Answer 16

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Question 17

Remember mnemonic to put nerves in order by name:

(Make sure CN are in order from 1-12, then line up mnemonic)

Answer 17

Oh Oh Oh To Take A Family Vacation Go Vegas And Hawaii

Question 18

CN 1: OLFACTORY

Answer 18

Sensory- smell

Question 19

CN 2: OPTIC

Answer 19

Sensory- vision

Question 20

CN 3: OCULOMOTOR

Answer 20

Motor- eye movement, raise eyelid

Question 21

CN 4: TROCHLEAR

Answer 21

Motor- downward and inward eye movement

Question 22

CN 5: TRIGEMINAL

Answer 22

Sensory- facial sensation

Motor- biting and chewing

Question 23

CN 6: ABDUCENS

Answer 23

Motor- lateral eye movement

Question 24

CN 7: FACIAL

Answer 24

Motor: facial expressions

Sensory: taste

Question 25

CN 8: VESTIBULOCOCHLEAR

Answer 25

Sensory: balance and hearing

Question 26

CN 9: GLOSSOPHARYNGEAL

Answer 26

Motor: gag reflex, swallowing

Sensory: taste

Question 27

CN 10: VAGUS

Answer 27

Motor: gag reflex

Sensory: sensation of pharynx and larynx

Question 28

CN 11: ASSESSORY

Answer 28

Motor: shoulder and neck movement

Question 29

CN 12: HYPOGLOSSAL

Answer 29

Motor: tongue movement, speech