Topic 19: Nervous System - PNS - Cranial Nerves Flashcards

1
Q

How many pairs of cranial nerves are there.

A

12

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2
Q

Which 2 pairs of nerves are only sensory?

A

I and II
olfactory and optic

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3
Q

Which pair is mainly sensory?

A

VIII
- vestibulocochlear

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4
Q

How many pairs are mixed nerves?

A
  • 9
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5
Q

What are mixed nerves?

A

carry both sensory and motor neurons

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6
Q

What are motor neurons in the nerves?

A
  • have cell bodies in brainstem nuclei
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7
Q

What are sensory neurons in the nerve?

A
  • have cell bodies in ganglia of PNS
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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

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9
Q
A
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