Intro

Question 1

What is a bundle of axons in the CNS called?

Answer 1

tract

Question 2

What is a bundle of axons in the PNS called?

Answer 2

nerve

Question 3

What is a group of neurons in the CNS called?

Answer 3

nucleus

Question 4

What is a group of neurons in the PNS called?

Answer 4

ganglion

Question 5

Is the CNS or PNS protected by bone?

Answer 5

CNS

Question 6

What are the divisions of the peripheral nervous system?

Answer 6

somatic and autonomic

Question 7

What are the 2 divisions of the autonomic nervous system?

Answer 7

motor and sensory

Question 8

Are sympathetic and parasympathetic actions controlled by the autonomic motor division or the autonomic sensory division?

Answer 8

autonomic motor division

Question 9

TRUE or FALSE: both somatic and autonomic nervous systems have a motor and sensory component.

Answer 9

TRUE

Question 10

Who is credited for the Neuron Doctrine?

Answer 10

Ramon y Cajal

Question 11

Describe the structure of a cortical neuron. Is it myelinated?

Answer 11

dendrite –> cell body –> axon hillock –> axon –> axon terminal

unmyelinated

Question 12

Describe the structure of a motor neuron. Is it myelinated?

Answer 12

dendrite –> cell body –> axon hillock –> axon –> axon terminal –> muscle

ALWAYS myelinated

Question 13

Describe the structure of a sensory neuron. Is it myelinated?

Answer 13

receptor cell –> peripheral branch axon –> cell body –> central branch axon –> axon terminals

myelinated

Question 14

Which type of neuron does not have dendrites?

Answer 14

sensory neuron

Question 15

Where are purkinje neurons found?

Answer 15

cerebellum

Question 16

Which of the following is/are multipolar?

a) interneuron
b) cortical neuron
c) motor neuron
d) sensory neuron
e) Purkinje neuron

Answer 16

b) cortical neuron
c) motor neuron
e) Purkinje neuron

Question 17

Which of the following is/are unipolar?

a) interneuron
b) cortical neuron
c) motor neuron
d) sensory neuron
e) Purkinje neuron

Answer 17

d) sensory neuron

Question 18

Which of the following is/are bipolar?

a) interneuron
b) cortical neuron
c) motor neuron
d) sensory neuron
e) Purkinje neuron

Answer 18

a) interneuron

Question 19

Which neuroglial cells form myelin sheath in the CNS?

Answer 19

oligodendrocytes

Question 20

Which neuroglial cells form myelin sheath in the PNS?

Answer 20

Schwann cells

Question 21

Which are essential for neuronal signaling?

a) neurons
b) glia
c) both
d) neither

Answer 21

c) both

Question 22

List all the glial cells in the PNS.

Answer 22

• Schwann cells
• Satellite cells

Question 23

List the glial cells in the CNS.

Answer 23

• oligodendrocytes
• astrocytes
• microglia
• ependymal cells

Question 24

Which type of glial cell participates in regeneration?

Answer 24

Schwann cells

Question 25

What do astrocytes do?

Answer 25

- maintain BBB - regulate ion, nutrient, and gas concentrations - absorb and recycle NTs - form glial scar after injury

Question 26

What do microglia do?

Answer 26

remove cell debris, wastes, and pathogens via phagocytosis

Question 27

What is the difference between grey and white matter distribution in the cerebral cortex and the spinal cord?

Answer 27

cerebral cortex: white matter inside, grey matter outside spinal cord: white matter outside, grey matter inside

Question 28

What do large diameter axons detect?

Answer 28

- touch - pressure - vibration - joint positioning

Question 29

What do small diameter axons detect?

Answer 29

- pain - temperature

Question 30

Are large diameter axons faster or small diamter axons?

Answer 30

large diameter axons

Question 31

Which is somatic? a) dorsal root ganglia b) autonomic ganglia c) both d) neither

Answer 31

a) dorsal root ganglia

Question 32

Which is parasympathetic and sympathetic? a) dorsal root ganglia b) autonomic ganglia c) both d) neither

Answer 32

b) autonomic ganglia

Question 33

Which has cell bodies of primary sensory neurons? a) dorsal root ganglia b) autonomic ganglia c) both d) neither

Answer 33

a) dorsal root ganglia

Question 34

Which has cell bodies of postsynaptic motor neurons? a) dorsal root ganglia b) autonomic ganglia c) both d) neither

Answer 34

b) autonomic ganglia

Question 35

Which is pseudounipolar? a) dorsal root ganglia b) autonomic ganglia c) both d) neither

Answer 35

a) dorsal root ganglia

Question 36

Which is multipolar? a) dorsal root ganglia b) autonomic ganglia c) both d) neither

Answer 36

b) autonomic ganglia

Question 37

Which have nuclei in the center of the cell? a) dorsal root ganglia b) autonomic ganglia c) both d) neither

Answer 37

a) dorsal root ganglia

Question 38

Which have nuclei located eccentrically? a) dorsal root ganglia b) autonomic ganglia c) both d) neither

Answer 38

b) autonomic ganglia

Question 39

Which has the more apparent satellite cell sheath? a) dorsal root ganglia b) autonomic ganglia c) both d) neither

Answer 39

a) dorsal root ganglia