cranial nerves

Question 1

CN I

Answer 1

• olfactory nerve (sensory/nose)
• originates from the forebrain

Question 2

CN II

Answer 2

• optic nerve (sensory/ eye)
• originates from the forebrain

Question 3

CN III

Answer 3

• oculomotor nerve (motor)
• all eye muscles (except those supplied by IV & VI

Question 4

CN IV

Answer 4

• trochlear nerve (motor/ superior oblique muscle)

Question 5

CN V

Answer 5

• trigeminal nerve (both)
• sensory: face, sinuses & teeth
• motor: muscles of mastication

Question 6

CN VI

Answer 6

• abducens nerve (motor/lateral rectus muscle)

Question 7

CN VII

Answer 7

• facial nerve (motor/muscles of the face)

Question 8

CN VIII

Answer 8

• vestibulocochlear nerve (sensory/inner ear)

Question 9

CN IX

Answer 9

• glossopharyngeal nerve (both)

Question 10

CN X

Answer 10

• vagus nerve (both)
  motor: heart, lungs, bronchi, GI tract
  sensory: heart, lungs, bronchi, trachea, larynx, pharynx, GI tract, external ear

Question 11

CN XI

Answer 11

• accessory nerve (motor/ sternocleidomastoid & trapezius muscles)

Question 12

CN XII

Answer 12

• hypoglossal nerve (motor/muscle of the tongue)

Question 13

what system does & where does the cranial nerve emerge from

Answer 13

cranial nerves are the 12 nerves of the peripheral nervous system emerge from the foramina and fissures of the cranium determine by the exit location (rostral to cau

Question 14

function of a nerve

Answer 14

to carry sensory and/or motor information between the body and the brain

Question 15

efferent (motor nerve)

Answer 15

information goes from the brain to the periphery

Question 16

if it travels from the periphery to the brain

Answer 16

afferent (sensory nerve)