Cranial Nerves

Question 1

mnemonic device

Answer 1

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Question 2

12 cranial nerves?

Answer 2

I Olfactory
II Optic
III Oculomotor
IV Trochlear
V Trigeminal
VI Abducens
VII Facial
VIII Vestibulocochlear
IX Glossopharyngeal
X Vagus
XI Accessory (Spinal Accessory)
XII Hypoglossal

Question 3

Function of nerves mnemonic device (sensory, motor, both).

Answer 3

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Question 4

CN 1

Answer 4

Olfactory- sensory

Question 5

CN 2

Answer 5

Optic- sensory

Question 6

CN 3

Answer 6

Oculomotor- Motor

Question 7

CN 4

Answer 7

Trochlear- motor

Question 8

CN 5

Answer 8

trigeminal- both

Question 9

CN 6

Answer 9

abducens- motor

Question 10

CN 7

Answer 10

facial- both

Question 11

CN 8

Answer 11

vestibulocochlear- sensory

Question 12

CN 9

Answer 12

glossopharyngeal- both

Question 13

CN 10

Answer 13

vagus- both

Question 14

CN 11

Answer 14

accessory- motor

Question 15

CN 12

Answer 15

hypoglossal- motor

Question 16

What are the cranial nerves involved with speech and swallowing?

Answer 16

5,7,9,10,11,12

Question 17

What does gray matter do?

Answer 17

receives information & regulates outgoing information
Contains Cell bodies of neurons

Question 18

What does white matter do

Answer 18

Sends info to other regions of the brain, spinal

Question 19

What is GABA

Answer 19

Primary inhibitory neurotransmitter in brain and most output of basal ganglia

Question 20

Alpha Motor Neurons

Answer 20

the alpha motor neurons that innervate the muscle spindle (extrafusal)
Large cell bodies
Receive proprioceptive sensory input

Question 21

Gamma Motor Neurons

Answer 21

Gamma – innervate muscle spindle (intrafusal)
small cell bodies
lack direct proprioceptive input

Question 22

Function of CSF

Answer 22

Provides mechanical protection/ cushioning
Facilitates homeostasis
Facilitates communication between CNS & Peripheral nervous system & Immune system

Question 23

What are myotomes?

Answer 23

a group of muscles which is innervated by single spinal nerve root.