Cranial Nerves

Question 1

CN 1

Answer 1

Olfactory (sensory)

• smell/nose, test by identifying odors

Question 2

CN 2

Answer 2

Optic (Sensory)

• eye/test visual fields

Question 3

CN 3

Answer 3

Oculomotor (Motor)

• Eyelid control, upward, downward, and medial gaze,
• autonomic control smooth muscle of eye/reaction to light

Question 4

CN 4

Answer 4

Trochlear (motor)

• superior oblique mm, test with downward and out gaze.

Question 5

CN 5

Answer 5

Trigeminal (BOTH)

• Sensation: touch/pain 3 sections on face
• Motor: muscles of mastication

Question 6

CN 6

Answer 6

Abducens (motor)

lateral gaze (lat. rectus muscle)

Question 7

CN 7

Answer 7

Facial (BOTH)

Motor: facial muscles (test by closing eyes, smile with teeth, puff cheeks.
Sensation: ant 1/3 tongue

Question 8

CN 8

Answer 8

Vestibulocochlear (Sensation)

• hearing : ear, Balance: ear
  Test with hearing tests.

Question 9

CN 9

Answer 9

Glossopharyngeal (BOTH)

Sensation: taste post. tongue
Motor: muscles of pharynx, swallow test/gag reflex

Question 10

CN 10

Answer 10

Vagus (BOTH)

• Sensory: tongue, epiglottis, pharynx, larynx, bronchi
• Motor: muscles of palate, pharynx, larynx, thoracic and abdominal viscera

Say AHHH, ability to swallow, gag reflex

Question 11

CN 11

Answer 11

Accessory (Motor)

• sternocleidomastoid and trapezius muscle, Test with shoulder shrug

Question 12

CN 12

Answer 12

Hypoglossal (motor)

• muscles of tongue
• tongue protrusion, if injured, tongue deviates toward injured side.