T4- Cranial Nerves

Question 1

How many cranial nerves are there?

Answer 1

12

Question 2

What is cranial nerve 1?

Answer 2

Olfactory nerve for smells

It is a sensory nerve

Question 3

How do you test cranial nerve 1?

Answer 3

Close eyes and mouth
Have client occlude one nostril at a time and identify different smells
Ex: coffee, orange, toothpaste, clove oil

Question 4

What is cranial nerve 2?

Answer 4

Optic nerve for visual acuity

It is a sensory nerve

Question 5

How do you test cranial nerve II (optic)

Answer 5

Use a snellen chart 36cm away
Use an ophthalmoscope
Test peripheral vision with confrontation test

Question 6

What is cranial nerve III

Answer 6

Oculomotor nerve for eye movement

It is a motor nerve

Question 7

How do you test cranial nerve III (oculomotor)

Answer 7

Use a pen light to illuminate the pupils looking at the illuminated eye and then again looking at the opposite eye (PERRLA)

Have pt look at an object near and far

• constriction when looking close
• dilation looking far

Looking for ability to open and close eyelids

Question 8

What is cranial nerve IV

Answer 8

Trochlear nerve for eye movement

This is a motor nerve

Question 9

How do you test cranial nerve IV (trochlear)

Answer 9

Hold a pen light about 1 foot away and have the pt follow the light up, down, and diagonally

Question 10

What is cranial nerve 5?

Answer 10

Trigeminal nerve for facial movement and sensation

This is both sensory and motor

Question 11

How do you test cranial nerve 5 (trigeminal)

Answer 11

Have pt clench teeth, palpate temporal and masseter nerve

Test light touch sensation with eyes closed rubbing cotton over the forehead, sinuses, and jaw

Question 12

What is cranial nerve VI

Answer 12

The abducens nerve for eye movement

Tests motor

Question 13

How do you test the abducens nerve or (6)?

Answer 13

Tests lateral eye movement, following the 6 cardinal gazes with a pen light

Question 14

Cranial nerve VII

Answer 14

Facial nerve tests facial movement and tastes on the tongue

Both motor and sensory

Question 15

How to test the facial nerve (VII)

Answer 15

• raise eye brows
• puff cheeks
• clench teeth and palpate the muscles
• place salty or sweet tastes on anterior tongue

Question 16

Cranial nerve VIII

Answer 16

The Acoustic or vestibulochlear tests hearing ability

Sensory

Question 17

How do you test the acoustic or nerve VIII

Answer 17

Finger rubbing test
Whisper test
Rhine Test
Webber Test

Question 18

Cranial nerve IX

Answer 18

Glossopharyngeal tests swallowing and gag reflex

Both sensory and motor

Question 19

How do you test the glossopharyngeal or cranial nerve 9

Answer 19

Test gag reflex with tongue depressor and have patient swallow

Question 20

Cranial Nerve X

Answer 20

Vague nerve tests speech and swallowing

Both motor and sensory

Question 21

How do you test cranial nerve 10 or vagus nerve

Answer 21

Have patient to say “ah” and swallow

Question 22

Cranial nerve XI

Answer 22

Spinal accessory nerve tests shoulder, neck, and back strength and symmetry
Motor nerve

Question 23

How do you test cranial nerve 11 or spinal accessory nerve

Answer 23

Have patient turn head sided to side with resistance

Have patient shrug shoulders with resistance

Question 24

Cranial Nerve XII

Answer 24

Hypoglossal nerve tests tongue movement

Question 25

How to test the hypoglassal or cranial nerve 12

Answer 25

Stick tongue out at midline and move it side to side