KIN 100 - Cranial Nerves (lecture 29)

Question 1

How many pairs of spinal nerves branch from spinal cord and their functions

Answer 1

31 pairs
- each nerve carries a mixture of both sensory and motor information

Question 2

How many cranial nerve that branch from the inferior surface of the brain and their functions

Answer 2

12 pairs
- each nerve can carry only motor information, only sensory information, or a mixture of both

Question 3

Cranial Nerve I

Answer 3

Olfactory
- sensory
- functions: olfaction (smell)

Question 4

Cranial Nerve II

Answer 4

Optic
- sensory
- vision

Question 5

Cranial Nerve III

Answer 5

Oculomotor
- motor
- eye muscles

Question 6

Cranial Nerve IV

Answer 6

Trochlear
- motor
- eye muscles

Question 7

Cranial nerve V

Answer 7

Trigeminal
- sensory and motor
- sensation from skin on the face muscles of mastication

Question 8

Cranial nerve VI

Answer 8

Abducens
- motor
- eye muscles

Question 9

Cranial nerve VII

Answer 9

Facial
- sensory and motor
- muscles of facial expression
- Taste from the tongue

Question 10

Cranial nerve VIII

Answer 10

Vestibulocochlear
- sensory
- hearing
- balance

Question 11

Cranial nerve IX

Answer 11

Glossopharyngeal
- sensory and motor
- Muscles of swallowing
- Taste from the tongue

Question 12

Cranial Nerve X

Answer 12

Vagus
- sensory and motor
- Motor and sensory to all major organs in the thorax and abdomen

Question 13

Cranial nerve XI

Answer 13

Accessory
- motor
- trapezius and sterncleidomastoid

Question 14

Cranial nerve XII

Answer 14

Hypoglossal
- Motor
- movement of the tongue