Cranial Nerves

Question 1

Name, Function cranial nerve II

Answer 1

Optic, vision

Question 2

Name & Function cranial nerve III

Answer 2

Oculomotor, moves eye up, down, medially; raises upper eyelid; constricts pupil

Question 3

What function does the trochlear nerve have?

Answer 3

moves eye medially and down

Question 4

What cranial nerve is # V and what function does it have?

Answer 4

Trigeminal; facial sensation, chewing, sensation from tmj

Question 5

What function does cranial nerve # VI have?

Answer 5

abducts eye

Question 6

Name cranial nerve VIII and describe it’s function

Answer 6

vestibulocochlear; sensation of head position relative to gravity and head movement, hearing

Question 7

Which cranial nerve is numbered X and what is its function?

Answer 7

Vagus; regulates viscera, swallowing, speech, taste

Question 8

Which cranial nerve is responsible for swallowing, salivation, and taste?

Answer 8

IX, glossopharyngeal

Question 9

Which cranial nerve is responsible for moving the tongue?

Answer 9

hypoglossal, XII

Question 10

Are cranial nerves located in the PNS or CNS?

Answer 10

PNS

Question 11

Where are cranial nerves located?

Answer 11

brain stem

Question 12

Name & Function Cranial Nerve I

Answer 12

Olfatory, smell

Question 13

What cranial nerves are sensory only?

Answer 13

olfactory, optic, vestibulocochlear

Question 14

what cranial nerves are efferent only?

Answer 14

Oculomotor, trochlear, abducens, accessory, hypoglossal

Question 15

what cranial nerves are both efferent and afferent nerves?

Answer 15

trigeminal, facial, glossopharyngeal, vagus

Question 16

What nerve maybe affected if the patient can’t identify familiar odors?

Answer 16

Cranial nerve

Question 17

Patient has difficulty reading an eye exam chart . Patient is unable to identify objects at a reasonable distance. What cranial nerve could be affected?

Answer 17

Optic

Question 18

What test could show a positive oculomotor exam?

Answer 18

Patient has difficulty following an object (pencil) without rotating their head during the test.

Question 19

Patient is unable to look down and inward. A positive test is indicated by an inability to depress the eyes/or complaints of diplopia. What cranial nerve is injured?

Answer 19

Trochlear

Question 20

Patient is asked to close their eyes while a cotton ball or safety pin is touched to the patients face. If the patient is able to feel either a sharp or dull sensation what cranial nerve is intact?

Answer 20

Trigeminal

Question 21

Patient is unable to make a lateral gaze, what cranial nerve is damaged?

Answer 21

Abducens

Question 22

What would be a good sensory test for the facial nerve ?

Answer 22

Patient is asked to differentiate a salty popcorn piece from a sweat one.

Question 23

Patient is unable to close eyes tight and whistle, what cranial nerve could be injured?

Answer 23

Facial

Question 24

Patient is tested with a tunning fork to make sure they can hear. What nerve is being tested?

Answer 24

Vestibulocochlear

Question 25

Therapist touches the pharynx with a tongue depressor and the patient does not gag, what cranial nerve maybe injured?

Answer 25

Glossopharyngeal or Vagus

Question 26

This cranial nerve has both a sensory and motor component and a test for sensory would be testing the tongue for it’s ability to accurately identity sour from bitter food.

Answer 26

Glossopharyngeal

Question 27

Patient is unable to shrug shoulders and maintain the position with manual resistance, what cranial nerve could be injured?

Answer 27

Accessory

Question 28

What test could check for hypoglossal nerve injury?

Answer 28

Asking the patient to stick out their tongue and observing if the tongue fully protrudes or if it deviates?

Question 29

If the gag reflex is absent what would the therapist check additionally to rule out glossopharyngeal damage?

Answer 29

therapist would also examine the movement of the soft palate and uvula