Topic 19: Nervous System - PNS - Cranial Nerves Flashcards
1
Q
How many pairs of cranial nerves are there.
A
12
2
Q
Which 2 pairs of nerves are only sensory?
A
I and II
olfactory and optic
3
Q
Which pair is mainly sensory?
A
VIII
- vestibulocochlear
4
Q
How many pairs are mixed nerves?
A
- 9
5
Q
What are mixed nerves?
A
carry both sensory and motor neurons
6
Q
What are motor neurons in the nerves?
A
- have cell bodies in brainstem nuclei
7
Q
What are sensory neurons in the nerve?
A
- have cell bodies in ganglia of PNS
8
Q
Give an example of how the V nerve (trigemminal) is a mixed nerve?
A
motor = chewing
sensory = conveys general sensations (touch, pressure, pain, temp) from face to CNS
9
Q
A
