Cranial Nerves

Question 1

How many cranial nerves are there?

Answer 1

 12

Question 2

List the 12 cranial nerves in order

Answer 2

I. Olfactory
II. Optic
III. Oculomotor
IV. Trochlear
V. Trigeminal
VI. Abducens
VII. Facial
VIII. Vestibulochochlear (Auditory)
IX. Glossopharyngeal
X. Vegus
XI. Accessory
XII. Hypoglossal

Question 3

What does PERRLA stand for

Answer 3

Pupils are
Equal and
Round and
React to
Light and
Accommodate

Question 4

How do you test cranial nerve I (olfactory)

Answer 4

Have patient close eyes and waft a smell under their nose and see if they can tell you what that smell is.

Question 5

How do you test cranial nerve II (optic)

Answer 5

Snellen chart

Question 6

How do you test cranial nerve III Oculomotor

Answer 6

Eyes move up and down

Question 7

How do you test cranial nerve IV (Trochlear)

Answer 7

Finger to nose

Question 8

How do you test cranial nerve V (Trigeminal)

Answer 8

Chewing while feeling jaw

Question 9

How do you test cranial nerve VI (Abducens)

Answer 9

6 cardinal gazes with eyes

Question 10

How do you test cranial nerve VII (facial)

Answer 10

Smile, frown, puff cheeks, chose teeth, raise eyebrows, close eyes and try to lift eyelids

Question 11

How do you test cranial nerve VIII vestibulochochlear

Answer 11

Hearing: whisper test, Weber test, rinne test

Question 12

How do you test cranial nerve IX (Glossopharyngeal)

Answer 12

Gag reflex and swallow

Question 13

How do you test cranial nerve X (vagus)

Answer 13

Swallow

Question 14

How do you test cranial nerve XI (accessory)

Answer 14

Shrug shoulders

Question 15

How do you test cranial nerve XII (Hypoglossal)

Answer 15

Tongue out and side to side