Question 1

Select the best description of the oligodendrocytes:

Accepted Answer

A)   form myelin sheaths in the central nervous system
B)   help maintain the blood-brain barrier
C)   form myelin sheaths in the peripheral nervous system
D)   surround neurons in peripheral nervous system ganglia

Question 2

The efferent (motor) portion of the autonomic nervous system consists of sympathetic and parasympathetic divisions.

Accepted Answer

A) True 
 B)False

Question 3

A significant difference between neurons and neuroglia is that mature neuroglia can divide whereas mature neurons generally cannot divide.

Accepted Answer

A) True 
 B)False

Question 4

Arrange the following terms in a chart that exhibits your understanding of the functional organization of the nervous system: somatic nervous system, central nervous system, sympathetic division, peripheral nervous system, parasympathetic division, autonomic nervous system.

Accepted Answer

Refer to Figure 16.2. The following shou...

Question 5

Accidentally stepping on a nail with the sole of your foot causes you quite a bit of discomfort. Which type of pathway is involved in relaying information about the nail to the central nervous system?

Accepted Answer

A)   efferent (motor) 
B)   afferent (sensory) 
C)   visceral
D)   autonomic

Question 6

The peripheral nervous system includes:

Accepted Answer

A)   cranial nerves and their branches.
B)   spinal nerves and their branches.
C)   ganglia
D)   all of these choices

Question 7

The three basic functions of the nervous system are _____ function, _____ function, and _____ function.

Accepted Answer

sensory, i...

Question 8

Dendrites are processes of a neuron that:

Accepted Answer

A)   carry nerve impulses away from the neuron cell body.
B)   are usually myelinated.
C)   are usually longer than axons.
D)   none of these choices

Question 9

A main difference between neurons (nerve cells)  and neuroglia (glia)  is:

Accepted Answer

A)   neuroglia are found only in the central nervous system.
B)   mature neurons do not normally divide; neuroglia do.
C)   neurons are more numerous than neuroglia.
D)   neurons are generally smaller than neuroglia.

Question 10

Diverging circuits allow for transmission of nerve impulses from _____ neuron(s)  to _____ neuron(s) .

Accepted Answer

A)   several, one
B)   one, several
C)   unipolar, multipolar
D)   multipolar, unipolar

Question 11

When compared to unmyelinated axons, myelinated axons: 
1)  are electrically insulated
2)  are gray in color
3)  have a faster speed of nerve impulse conduction
4)  are more numerous

Accepted Answer

A)   1, 2, 3, 4
B)   1, 3, 4 only
C)   2, 3, 4 only
D)   1, 2, 4 only

Question 12

The portion of the plasma membrane of a neuron that surrounds the axoplasm is called the axolemma.

Accepted Answer

A) True 
 B)False

Question 13

Which structure of the neuron is included in the neuromuscular junction?

Accepted Answer

A)   the axon terminal
B)   the axon hillock
C)   the cell body (perikaryon) 
D)   the dendrites

Question 14

Select the best description of neurotransmitter molecules:

Accepted Answer

A)   stored in synaptic vesicles
B)   accumulate as yellow-brown granules as the cell ages
C)   fine processes at the ends of axons
D)   usually short and branched

Question 15

White matter includes:

Accepted Answer

A)   ganglia
B)   a thin outer layer of most of the brain
C)   nuclei in the brain
D)   tracts in the spinal cord

Question 16

Select the best description of lipofuscin:

Accepted Answer

A)   form(s)  part of the cytoskeleton
B)   rough endoplasmic reticulum
C)   accumulates as yellow-brown granules as the cell ages
D)   usually short and branched

Question 17

_____ (or sensory)  impulses travel from the _____ to the _____.

Accepted Answer

A)   Efferent, central nervous system, receptors
B)   Efferent, receptors, central nervous system
C)   Afferent, receptors, central nervous system
D)   Afferent, central nervous system, receptors

Question 18

Regeneration of nerve fibers in the central nervous system is highly unlikely because:

Accepted Answer

A)   there are no neurolemmas (sheaths of Schwann) .
B)   oligodendrocytes inhibit axon regeneration.
C)   astrocytes rapidly form a physical barrier of scar tissue.
D)   all of these choices

Question 19

List and define the four types of neuronal circuits in the nervous system. What is the function of each?

Accepted Answer

See text a...

Question 20

Select the best description of the Schwann cells (neurolemmocytes) :

Accepted Answer

A)   form myelin sheaths in the central nervous system
B)   help maintain the blood-brain barrier
C)   form myelin sheaths in the peripheral nervous system
D)   surround cell bodies in peripheral nervous system ganglia

Exam 16: Nervous Tissue

List and define the four types of neuronal circuits in the nervous system. What is the function of each?

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A significant difference between neurons and neuroglia is that mature neuroglia can divide whereas mature neurons generally cannot divide.

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Select the best description of lipofuscin:

Correct AnswerverifiedShow Answer

Select the best description of the oligodendrocytes:

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_____ (or sensory) impulses travel from the _____ to the _____.

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The efferent (motor) portion of the autonomic nervous system consists of sympathetic and parasympathetic divisions.

Correct AnswerverifiedShow Answer

Arrange the following terms in a chart that exhibits your understanding of the functional organization of the nervous system: somatic nervous system, central nervous system, sympathetic division, peripheral nervous system, parasympathetic division, autonomic nervous system.

Correct AnswerverifiedRefer to Figure 16.2. The following shou...View AnswerShow Answer

Select the best description of neurotransmitter molecules:

Correct AnswerverifiedShow Answer

Regeneration of nerve fibers in the central nervous system is highly unlikely because:

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When compared to unmyelinated axons, myelinated axons: 1) are electrically insulated 2) are gray in color 3) have a faster speed of nerve impulse conduction 4) are more numerous

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A main difference between neurons (nerve cells) and neuroglia (glia) is:

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The portion of the plasma membrane of a neuron that surrounds the axoplasm is called the axolemma.

Correct AnswerverifiedShow Answer

Which structure of the neuron is included in the neuromuscular junction?

Correct AnswerverifiedShow Answer

Accidentally stepping on a nail with the sole of your foot causes you quite a bit of discomfort. Which type of pathway is involved in relaying information about the nail to the central nervous system?

Correct AnswerverifiedShow Answer

The three basic functions of the nervous system are _____ function, _____ function, and _____ function.

Correct Answerverifiedsensory, i...View AnswerShow Answer

Diverging circuits allow for transmission of nerve impulses from _____ neuron(s) to _____ neuron(s) .

Correct AnswerverifiedShow Answer

Select the best description of the Schwann cells (neurolemmocytes) :

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Dendrites are processes of a neuron that:

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White matter includes:

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The peripheral nervous system includes:

Correct AnswerverifiedShow Answer

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___ (or sensory) impulses travel from the _ to the ___.

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Refer to Figure 16.2. The following shou...
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The three basic functions of the nervous system are ___ function, _ function, and ___ function.

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sensory, i...
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Diverging circuits allow for transmission of nerve impulses from _ neuron(s) to _ neuron(s) .

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