Cranial Nerves

Question 1

1: Olfactory Nerve

Answer 1

Sensory. Smell

Damage: no smell

Question 2

2: Optic Nerve

Answer 2

Sensory. Visual Acuity and Visual Fields

Damage: Blindness

Question 3

3: Oculomotor Nerve

Answer 3

Motor. (4 of 6 eye muscles) Pupillary Reactions, Extraocular movements (including opening the eye)
Damage: Droopy Eyelid, constant dilated pupil, inability to rotate eye

Question 4

4: Trochlear Nerve

Answer 4

Sensory and Motor. Very small. Pupillary Reactions, Extraocular Movements (eye opening too)
Damage: Cannot move eye

Question 5

5: Trigeminal Nerve

Answer 5

Sensory and Motor. Largest. facial sensation, jaw movements, corneal reflexes, voice, speech

Question 6

6: Abducens nerve

Answer 6

Sensory and Motor: Extraocular movements to (eye opening) Laterus Rectus
Damage: pulls eye medially, cannot look laterally

Question 7

7: Facial Nerve

Answer 7

Sensory and Motor: Facial movements and gustation (taste), voice, speech
Damage: distorts taste, especially with sweet foods, facial sagging

Question 8

8: Vestibulotrochlear Nerve

Answer 8

Sensory. Also called acoustic nerve.
Vestibular Branch: Equilibrium
Cochlear Branch: Hearing
Damage: deafness, dizziness, no balance

Question 9

9: Glossopharyngeal

Answer 9

Sensory and Motor. Sensory Portion: tonsils, salivary gland, back 1/3 of tongue
Motor: Muscles of pharynx
Also swallowing and gag reflex
Damage: loss of bitter/sour taste, difficulty swallowing

Question 10

10: Vagus Nerve

Answer 10

Sensory and Motor.
Sensory: Autonomic organs of thoracic and abdominal cavities, breathing, heartbeat, hunger pangs, peristalsis
Motor: Voice, speech
Damage: impact speech and swallowing

Question 11

11: Accessory Nerve

Answer 11

Motor. Shrugging the shoulders and turning head

Damage: difficulty doing those things ^

Question 12

12: Hypoglossal Nerve

Answer 12

Motor. Voice and Speech

Damage: Difficulty sticking out tongue, swallowing, difficulty speaking