Question 1

The Greek word for tree correctly describes the shape of the axon.

Accepted Answer

A) True 
 B)False

Question 2

The function of the parasympathetic nervous system is commonly described as preparing the body for "fight or flight."

Accepted Answer

A) True 
 B)False

Question 3

Which is true of a reflex arc?

Accepted Answer

A)   It does not involve the brain.
B)   It always consists of an afferent neuron and an efferent neuron.
C)   It always consists of an afferent neuron, an efferent neuron, and an interneuron.
D)   It always consists of an afferent neuron, an efferent neuron, the brain, and the spinal cord.E) A) and B)
F) None of the above

Question 4

Satellite cells are oligodendrocytes that surround the cell bodies of neurons in the CNS.

Accepted Answer

A) True 
 B)False

Question 5

The nervous system is organized to do which of the following?

Accepted Answer

A)   Detect changes in the external environment.
B)   Detect changes in the internal environment.
C)   Evaluate changes in the environment.
D)   All of the above are true.E) A) and B)
F) A) and C)

Question 6

Which of the following is not a factor in the velocity of nerve impulse conduction?

Accepted Answer

A)   Length
B)   Diameter
C)   Whether or not it is myelinated
D)   Neither B nor CE) All of the above
F) B) and C)

Question 7

Explain how a neuron can repair itself. What increases the likelihood of repair; what decreases the likelihood of repair? If repair is not possible, what other options are possible to innervate the effector organ?

Accepted Answer

A neuron can repair itself through a pro...

Question 8

The largest and most numerous types of neuroglia are the:

Accepted Answer

A)   astrocytes.
B)   microglia.
C)   ependymal cells.
D)   oligodendrocytes.E) A) and B)
F) A) and C)

Question 9

Oligodendrocytes are found only around dendrites of neurons of the CNS.

Accepted Answer

A) True 
 B)False

Question 10

Explain the types of reflex arc. Differentiate between a contralateral reflex arc and an ipsilateral reflex arc.

Accepted Answer

Reflex arcs are neural pathways that con...

Question 11

Groups of cell bodies located in the brain or spinal cord are referred to as ganglia.

Accepted Answer

A) True 
 B)False

Question 12

Neurons have, at best, a limited ability to repair themselves.

Accepted Answer

A) True 
 B)False

Question 13

The afferent pathways of the autonomic nervous system stimulate muscles and do not have a sensory component.

Accepted Answer

A) True 
 B)False

Question 14

Describe the somatic and autonomic nervous systems.

Accepted Answer

The somatic nervous system is responsibl...

Question 15

Dendrites carry impulses toward the cell body.

Accepted Answer

A) True 
 B)False

Question 16

Small, lipid-soluble molecules can diffuse easily across the blood-brain barrier.

Accepted Answer

A) True 
 B)False

Question 17

Interneurons are found only in the CNS.

Accepted Answer

A) True 
 B)False

Question 18

Match each part of the nervous system with its corresponding description.
-Consists of nerves that lie in the periphery of the nervous system

Accepted Answer

A)  Afferent division
B)  Autonomic nervous system
C)  Central nervous system
D)  Efferent division
E)  Parasympathetic divisionF) PNSG) Somatic nervous systemH) Sympathetic divisionI) None of the above
J) C) and F)

Question 19

The epineurium is deep to the perineurium.

Accepted Answer

A) True 
 B)False

Question 20

All reflex arcs contain an interneuron.

Accepted Answer

A) True 
 B)False

Exam 18: Nervous System Cells

Explain the types of reflex arc. Differentiate between a contralateral reflex arc and an ipsilateral reflex arc.

Correct AnswerAnswered by ExamLex AIReflex arcs are neural pathways that con...View AnswerShow Answer

The afferent pathways of the autonomic nervous system stimulate muscles and do not have a sensory component.

Correct AnswerverifiedShow Answer

Match each part of the nervous system with its corresponding description. -Consists of nerves that lie in the periphery of the nervous system

Correct AnswerverifiedShow Answer

Interneurons are found only in the CNS.

Correct AnswerverifiedShow Answer

The Greek word for tree correctly describes the shape of the axon.

Correct AnswerverifiedShow Answer

Which is true of a reflex arc?

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All reflex arcs contain an interneuron.

Correct AnswerverifiedShow Answer

The epineurium is deep to the perineurium.

Correct AnswerverifiedShow Answer

Oligodendrocytes are found only around dendrites of neurons of the CNS.

Correct AnswerverifiedShow Answer

Satellite cells are oligodendrocytes that surround the cell bodies of neurons in the CNS.

Correct AnswerverifiedShow Answer

The function of the parasympathetic nervous system is commonly described as preparing the body for "fight or flight."

Correct AnswerverifiedShow Answer

The nervous system is organized to do which of the following?

Correct AnswerverifiedShow Answer

Dendrites carry impulses toward the cell body.

Correct AnswerverifiedShow Answer

Which of the following is not a factor in the velocity of nerve impulse conduction?

Correct AnswerverifiedShow Answer

The largest and most numerous types of neuroglia are the:

Correct AnswerverifiedShow Answer

Small, lipid-soluble molecules can diffuse easily across the blood-brain barrier.

Correct AnswerverifiedShow Answer

Explain how a neuron can repair itself. What increases the likelihood of repair; what decreases the likelihood of repair? If repair is not possible, what other options are possible to innervate the effector organ?

Correct AnswerAnswered by ExamLex AIA neuron can repair itself through a pro...View AnswerShow Answer

Neurons have, at best, a limited ability to repair themselves.

Correct AnswerverifiedShow Answer

Groups of cell bodies located in the brain or spinal cord are referred to as ganglia.

Correct AnswerverifiedShow Answer

Describe the somatic and autonomic nervous systems.

Correct AnswerAnswered by ExamLex AIThe somatic nervous system is responsibl...View AnswerShow Answer

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Reflex arcs are neural pathways that con...
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A neuron can repair itself through a pro...
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Answered by ExamLex AI
The somatic nervous system is responsibl...
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