Quiz 9 - Cranial nerves

Question 1

cranial nerves

Answer 1

• 12 pairs of cranial nerves
• ventrolateral surface of the brain
• nerves innervate the periphery emerging from the brain

Question 2

olfactory nerve

Answer 2

CN I - function: smell (sensory)

Question 3

optic nerve

Answer 3

CN II - function: vision (sensory)

Question 4

oculomotor nerve

Answer 4

CN III - function: controls four of the six extra-ocular eye muscle, change diameter of pupil (motor)

Question 5

trochlear nerve

Answer 5

CN IV - function: controls superior oblique muscles (smallest of the cranial nerves) (motor)
- helps move eye down

Question 6

trigeminal nerve

Answer 6

CN V - (mixed)

• ophthalmic branch
• maxillary branch
• mandibular branch

Question 7

ophthalmic branch

Answer 7

(sensory) - sensations from forehead, eyelids and nose

Question 8

maxillary branch

Answer 8

(sensory) - sensations from lower eyelid, upper lip and cheek

Question 9

mandibular branch

Answer 9

(mixed) - controls mastication, sensations of temples, gums and teeth of mandible, salivary gland of portions of tongue

Question 10

abducens nerve

Answer 10

CN VI - function: controls lateral eye movements (motor)

Question 11

facial nerve

Answer 11

CN VII - function: sensations from the face (sensory), controls muscles of the face (motor)

Question 12

vestibulocochlear nerve

Answer 12

CN VIII - (sensory)

• vestibular branch - balance and equilibrium
• cochlear branch - hearing

Question 13

glossopharyngeal nerve

Answer 13

CN IX - function: tongue pain and taste (sensory), swallowing (motor)

Question 14

vagus nerve

Answer 14

CN X - function: information from organs (sensory), sends information to the organs (motor)

Question 15

accessory nerve

Answer 15

CN XI - functions: controls sternocleidomastoid (shrug shoulders) and trapezius, also goes to some swallowing muscles

Question 16

hypoglossal nerve

Answer 16

CN XII - functions: controls tongue movement (motor)