Cranial Nerves

Question 1

Name cranial n. I

Answer 1

Olfactory

Question 2

Name cranial n. II

Answer 2

Optic

Question 3

Name cranial n. III

Answer 3

Occulomotor

Question 4

Name cranial n. IV

Answer 4

Trochlear

Question 5

Name cranial n. V

Answer 5

Trigeminal

Question 6

Name cranial n. VI

Answer 6

Abducens

Question 7

Name cranial n. VII

Answer 7

Facial

Question 8

Name cranial n. VIII

Answer 8

Vestibulochoclear

Question 9

Name cranial n. IX

Answer 9

Glossopharyngeal

Question 10

Name cranial n. X

Answer 10

Vagus

Question 11

Name cranial n. XI

Answer 11

Spinal Accessory

Question 12

Name cranial n. XII

Answer 12

Hypoglossal

Question 13

List the sensory only cranial n.

Answer 13

Olfactory
Optic
Vestibulochoclear

Question 14

List the motor only cranial n.

Answer 14

Oculomotor
Trochlear
Abducens
Spinal Accessory (Accessory)
Hypoglossal

Question 15

List the sensory and motor cranial n.

Answer 15

Trigeminal
Facial
Glossopharyngeal
Vagus

Question 16

Fxn of Olfactory

Answer 16

Sensory: Smell: Nose

Question 17

Fxn of Optic

Answer 17

Sensory: Sight: Eye

Question 18

Fxn of Oculomotor

Answer 18

• Voluntary motor: levator of eyelid; superior, medial, and inferior recti; inferior oblique m. of eyeball
• Autonomic motor: Smooth muscle of eyeball

Question 19

Fxn of trochlear

Answer 19

Voluntary motor: superior oblique m. of eyeball (down and in)

Question 20

Fxn of Trigeminal

Answer 20

• Sensory: Touch, pain: Skin of face, mucous membranes of nose, sinuses, mouth anterior tongue
• Voluntary motor: muscles of mastication

Question 21

Fxn of Abducens

Answer 21

Voluntary motor: lateral rectus muscle of the eye ball (lateral gaze)

Question 22

Fxn of Facial

Answer 22

• Sensory: Taste: Anterior Tongue
• Voluntary motor: facial muscles
• Autonomic motor: lacrimal, submandibular, and sublingual glands

Question 23

Fxn of Vestibulochoclear

Answer 23

Sensory: Hearing- ear; Balance- ear

Question 24

Fxn of Glossopharyngeal

Answer 24

• Sensory:
  1) Touch and pain: posterior tongue, pharynx
  2) Taste: Posterior tongue
• Motor:
  1) Voluntary motor: select muscles of the pharynx
  2) Autonomic: Parotid gland (salivary gland)

Question 25

Fxn of Vagus

Answer 25

Sensory:
1) Touch and pain: pharynx, larynx, and bronchi
2) Taste: tongue and epiglottis
Motor:
1) voluntary: muscles of the palate, pharynx, and larynx
2) autonomic: thoracic and abdominal viscera

Question 26

Fxn of Accessory

Answer 26

Voluntary motor: SCM and Trapezius muscles

Question 27

Fxn of hypoglossal

Answer 27

Voluntary motor: muscles of tongue

Question 28

Test for olfactory

Answer 28

identify familiar odors (eg. chocolate, coffee)

Question 29

Test for optic

Answer 29

test visual fields

Question 30

Test for oculomotor

Answer 30

upward, downward, and medial gaze

Question 31

Test for trochlear

Answer 31

downward and inward gaze

Question 32

Test for trigeminal

Answer 32

• corneal reflex
• face sensation
• clench teeth; push down on chin to separate jaw

Question 33

Test for abducens

Answer 33

lateral gaze

Question 34

Test for facial

Answer 34

• close eyes tight
• smile and show teeth
• whistle and puff cheeks
• identify familiar tastes (eg. sweet, sour)

Question 35

Test for vestibulochoclear

Answer 35

• hear watch ticking
• hearing test
• balance and coordination tests

Question 36

Test for glossopharyngeal

Answer 36

• gag reflex

- ability to swallow

Question 37

Test for vagus

Answer 37

• gag reflex
• ability to swallow
• say “ahhh”

Question 38

Test for accessory

Answer 38

resisted shoulder shrug

Question 39

Test for Hypoglossal

Answer 39

tongue protrusion (if injured, tongue deviates toward injured side)