Cranial Nerves

Question 1

What is Cranial Nerve I?

Answer 1

Olfactory

Question 2

What is the function of Cranial Nerve I?

Answer 2

Sensory - smell

Question 3

How do you assess Cranial Nerve I?

Answer 3

Smell - coffee, cloves, peppermint

Question 4

What is Cranial Nerve II?

Answer 4

Optic

Question 5

What is the function of Cranial Nerve II?

Answer 5

Sensory - vision

Question 6

How do you assess Cranial Nerve II?

Answer 6

• Visual acuity - Shelley chart (cover eye not being examined)
• Test for visual fields
• examine with ophthalmoscope

Question 7

What is Cranial Nerve III?

Answer 7

Oculomotor

Question 8

What is the function of Cranial Nerve III?

Answer 8

Sensory and motor - primarily motor

-eyelid and eyeball movement

Question 9

How do you assess Cranial Nerve III?

Answer 9

• Move eye up, down and peripherally
• Test for accommodation
• Pupillary constriction
• Observe for pots is of upper eyelid

Question 10

What is Cranial Nerve IV?

Answer 10

Trochlear

Question 11

What is the function of Cranial Nerve IV?

Answer 11

Sensory and motor - primarily motor

• Innervates superior oblique eye muscle
• Turns eye downward and laterally

Question 12

How do you assess Cranial Nerve IV?

Answer 12

Inferior lateral movement of the eye

Question 13

What is Cranial Nerve V?

Answer 13

Trigeminal

Question 14

What is the function of Cranial Nerve V?

Answer 14

Sensory and motor

• Chewing
• Face and mouth touch and pain

Question 15

How do you assess Cranial Nerve V?

Answer 15

• Corneal reflex
• Sensation of skin of the face (eyebrow, cheeks, and chin) by using a wisp of cotton
• Chewing, biting, lateral jaw movements (move jaw side to side)

Question 16

What is Cranial Nerve VI?

Answer 16

Abductees

Question 17

What is the function of Cranial Nerve VI?

Answer 17

Sensory and motor - primarily motor

• Turns eye laterally
• Proprioception (sensory awareness of part of the body)

Question 18

How do you assess Cranial Nerve VI?

Answer 18

Inferior lateral eye movements

Question 19

What is Cranial Nerve VII?

Answer 19

Facial

Question 20

What is the function of Cranial Nerve VII?

Answer 20

Sensory and motor

• Controls mot facial expressions
• Secretion of ears and saliva

Question 21

How do you assess Cranial Nerve VII?

Answer 21

• Taste - anterior two thirds of tongue; sweet - sugar, salty, sour - lemon, bitter (rinse mouth between applications)
• Movement of forehead and mouth
• Raise eyebrows, show teeth, smile, and puff out cheeks

Question 22

What is Cranial Nerve VIII?

Answer 22

Vestibulocochlear (auditory)

Question 23

What is the function of Cranial Nerve VIII?

Answer 23

Sensory - Hearing and equilibrium sensation

Question 24

How do you assess Cranial Nerve VIII?

Answer 24

• Hearing, balance
• Webber and Rinne tests
• Otoscope

Question 25

What is Cranial Nerve IX?

Answer 25

Glossopharyngeal

Question 26

What is the function of Cranial Nerve IX?

Answer 26

Sensory and motor - Taste - Senses carotid blood pressure - Muscle sense - proprioception, sensory awareness of the body

Question 27

How do you assess Cranial Nerve IX?

Answer 27

- Swallowing and phonation | - Taste -posterior one third of tongue

Question 28

What is Cranial Nerve X?

Answer 28

Vagus

Question 29

What is the function of Cranial Nerve X?

Answer 29

Sensory and motor - senses aortic blood pressure - Slow heart rate - Stimulates digestive organs - Taste

Question 30

How do you assess Cranial Nerve X?

Answer 30

- Sensations of posterior one third of tongue, throat - Gag reflex (stimulate back of pharynx with a tongue blade) - Swallowing and phonation

Question 31

What is Cranial Nerve XI?

Answer 31

Spinal Accessory

Question 32

What is the function of Cranial Nerve XI?

Answer 32

Sensory and motor - primarily motor - Controls trapezius and sternocleidomastoid - Controls - swallowing movements - Muscle sense - proprioception

Question 33

How do you assess Cranial Nerve XI?

Answer 33

Shoulder movement, shoulder shrug, head rotation - push against examiner’s hand

Question 34

What is Cranial Nerve XII?

Answer 34

Hypo gloss all

Question 35

What is the function of Cranial Nerve XII?

Answer 35

Sensory and motor - primarily motor - Controls tongue movements - Muscle sense - proprioception

Question 36

How do you assess Cranial Nerve XII?

Answer 36

Tongue movement - protrude tongue, push tongue into the cheek