Question 1

Interneurons

Accepted Answer

A)   carry incoming information from sensory receptors to the CNS.
B)   carry outgoing motor information to effectors in the PNS.
C)   sense information from the stimulus in the periphery
D)   take in sensory information, direct it to specific CNS locations, and initiate the appropriate responseE) A) and B)
F) None of the above

Question 2

Describe layers of myelin and connective tissue surrounding a nerve.

Accepted Answer

The axon is myelinated by Schwann cells,...

Question 3

A somatic motor neuron carries

Accepted Answer

A)   information that signals muscle contraction in the organs in the ventral cavity.
B)   information, such as pain, from the viscera in the ventral cavity to the CNS.
C)   motor commands to the skeletal musculature.
D)   information from the skin to the CNS.E) None of the above
F) A) and C)

Question 4

All of the following are characteristics of dendrites except that they

Accepted Answer

A)   are more extensive branching than axons.
B)   always conduct action potentials.
C)   conduct signals toward the cell body.
D)   typically occur as more than one per cell.E) B) and C)
F) A) and D)

Question 5

An example of proprioception is

Accepted Answer

A)   the contraction of the triceps brachii.
B)   the contraction of pharyngeal arch muscles used in chewing.
C)   sensing a feather touch the skin.
D)   the sensation you feel during a wake-up stretch.E) A) and B)
F) All of the above

Question 6

________ neurons develop from neural crest cells.

Accepted Answer

The answer of ________ neurons develop from neural crest cells....

Question 7

Most tumors in the brain originate from glial cells, but not neurons. What characteristic of glial cells make them the most likely source of tumors in the brain?

Accepted Answer

A)   Glial cells are able to divide, while neurons are not.
B)   Glial cells naturally release a tumor-promoting factor.
C)   Glial cells carry a neuronal signal, making them vulnerable to abnormal replication.
D)   Glial cells are easily damaged by the electrical signal carried on the neurons.E) A) and B)
F) A) and D)

Question 8

Ganglia represent

Accepted Answer

A)   groups of axons in the PNS.
B)   groups of dendrites in the CNS.
C)   groups of neuron cell bodies in the PNS.
D)   groups of synapses in the CNS.E) All of the above
F) B) and C)

Question 9

Which cells are the macrophages of the CNS?

Accepted Answer

A)   ependymal cells
B)   microglial cells
C)   satellite cells
D)   Schwann cellsE) All of the above
F) B) and C)

Question 10

________ are the neuroglial cells with cilia.

Accepted Answer

The answer of ________ are the neuroglial cells with cilia....

Question 11

Use the diagram pictured above to answer the following questions.
-Identify the letter that indicates a Schwann cell.

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) A) and B)
G) All of the above

Question 12

Use the diagrams above to answer the following questions.
-Identify which diagram represents a cell that produces a myelin sheath in the central nervous system.

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) B) and E)
G) None of the above

Question 13

The white matter is the site where neuron cell bodies are clustered.

Accepted Answer

A) True 
 B)False

Question 14

The PNS and CNS are structurally linked together within the gray matter of the CNS.

Accepted Answer

A) True 
 B)False

Question 15

Action potentials travel along the

Accepted Answer

A)   axon membrane.
B)   dendrite membrane.
C)   cell body.
D)   myelin.E) A) and C)
F) B) and C)

Question 16

In MS, the immune system attacks and breaks down the myelin sheath surrounding CNS axons. What could be a consequence of this?

Accepted Answer

A)   Conduction along the axon would be disrupted, interfering with the function of the neuron.
B)   Conduction would be faster along the neuron without the myelin.
C)   The neuron would not be able to generate a new action potential.
D)   There would be no consequence, as myelin is not important to the function of the neuron.E) A) and D)
F) None of the above

Question 17

Which term is correctly matched with its definition?

Accepted Answer

A)   neuron - collection of axons in the PNS
B)   nerve fiber - a long axon
C)   nerve - a nerve cell
D)   neuron - a long axonE) A) and B)
F) A) and C)

Question 18

General visceral sensory impulses include pain, temperature, nausea, and hunger.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is not considered a special somatic sense?

Accepted Answer

A)   smell
B)   taste
C)   pain
D)   equilibriumE) A) and B)
F) A) and C)

Question 20

When the doctor uses a reflex hammer on your patellar ligament and you experience a "knee jerk" this is an example of a

Accepted Answer

A)   polysynaptic withdrawal reflex
B)   monosynaptic stretch reflex
C)   monosynaptic withdrawal reflex
D)   polysynaptic stretch reflexE) None of the above
F) A) and D)

Exam 12: Fundamentals of the Nervous System and Nervous Tissue

The PNS and CNS are structurally linked together within the gray matter of the CNS.

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Interneurons

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An example of proprioception is

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Ganglia represent

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Use the diagrams above to answer the following questions. -Identify which diagram represents a cell that produces a myelin sheath in the central nervous system.

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Which term is correctly matched with its definition?

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A somatic motor neuron carries

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When the doctor uses a reflex hammer on your patellar ligament and you experience a "knee jerk" this is an example of a

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The white matter is the site where neuron cell bodies are clustered.

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All of the following are characteristics of dendrites except that they

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________ are the neuroglial cells with cilia.

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In MS, the immune system attacks and breaks down the myelin sheath surrounding CNS axons. What could be a consequence of this?

Correct AnswerverifiedShow Answer

Which cells are the macrophages of the CNS?

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Which of the following is not considered a special somatic sense?

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Most tumors in the brain originate from glial cells, but not neurons. What characteristic of glial cells make them the most likely source of tumors in the brain?

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Describe layers of myelin and connective tissue surrounding a nerve.

Correct AnswerverifiedThe axon is myelinated by Schwann cells,...View AnswerShow Answer

General visceral sensory impulses include pain, temperature, nausea, and hunger.

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Use the diagram pictured above to answer the following questions. -Identify the letter that indicates a Schwann cell.

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Action potentials travel along the

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________ neurons develop from neural crest cells.

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The axon is myelinated by Schwann cells,...
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