Question 1

Parasympathetic neuron cell bodies are located in:

Accepted Answer

A)   the white columns of the sacral segments of the spinal cord.
B)   the lateral gray columns of thoracic segments of the spinal cord.
C)   nuclei of the brainstem and the lateral gray columns of the sacral cord.
D)   collateral ganglia.E) A) and D)
F) A) and C)

Question 2

Some parasympathetic postganglionic neurons have their cell bodies in nuclei in the brainstem.

Accepted Answer

A) True 
 B)False

Question 3

Norepinephrine can stimulate nicotinic or muscarinic receptors.

Accepted Answer

A) True 
 B)False

Question 4

All cranial nerves except nerves I and II contain parasympathetic fibers.

Accepted Answer

A) True 
 B)False

Question 5

The sympathetic trunk runs from C8 to L4.

Accepted Answer

A) True 
 B)False

Question 6

Explain physiologically how a beta blocker affects heart muscle activity.

Accepted Answer

Beta blockers work by blocking the actio...

Question 7

Axon terminals that secrete acetylcholine are called cholinergic terminals.

Accepted Answer

A) True 
 B)False

Question 8

The preganglionic neurons of both the sympathetic and the parasympathetic divisions are cholinergic.

Accepted Answer

A) True 
 B)False  True

Question 9

An effect of sympathetic stimulation on the eye is constriction of the pupil.

Accepted Answer

A) True 
 B)False

Question 10

All of the following are characteristics of sympathetic preganglionic neurons except:

Accepted Answer

A)   they secrete acetylcholine.
B)   they have long fibers from CNS to ganglion.
C)   dendrites and cell bodies are found in the lateral gray columns of thoracic and the first four lumbar segments of the spinal cord.
D)   All of the above are correct.E) A) and D)
F) B) and C)

Question 11

The parasympathetic division is also called the thoracolumbar division.

Accepted Answer

A) True 
 B)False

Question 12

Under normal, nonstressful conditions, the parasympathetic division is dominant.

Accepted Answer

A) True 
 B)False

Question 13

The postganglionic neurons of both the sympathetic and parasympathetic nervous systems produce acetylcholine as their neurotransmitter.

Accepted Answer

A) True 
 B)False  False

Question 14

What two enzymes terminate the activity of norepinephrine? How do they compare with the enzymes that terminate the activity of acetylcholine? What effect does this difference have on the body?

Accepted Answer

The two enzymes that terminate the activ...

Question 15

The autonomic nervous system functions chiefly in the:

Accepted Answer

A)   coordination of muscular activity.
B)   innervation of smooth muscle in the viscera.
C)   reception of sensory impulses.
D)   arousal of alerting mechanism.E) All of the above
F) B) and C)

Question 16

What brain structure acts as a "connection" between the cerebrum and the autonomic nervous system?

Accepted Answer

The brain structure that acts as a "conn...

Question 17

Explain physiologically how summation influences effectors doubly innervated by the autonomic nervous system.

Accepted Answer

Summation influences effectors doubly in...

Question 18

Which of the following is a description of the principle of antagonism as it relates to the autonomic nervous system?

Accepted Answer

A)   If sympathetic impulses tend to inhibit the effector, parasympathetic impulses tend to stimulate it.
B)   If sympathetic impulses inhibit autonomic centers, parasympathetic impulses tend to stimulate them.
C)   If sympathetic impulses tend to stimulate an effector, parasympathetic impulses tend to inhibit it.
D)   If sympathetic impulses initiate nerve conduction, parasympathetic impulses stop nerve conduction.E) A) and B)
F) A) and C)

Question 19

Once inside the sympathetic chain ganglion, the preganglionic fiber will always synapse with a sympathetic postganglionic neuron.

Accepted Answer

A) True 
 B)False  False

Question 20

Explain in general, what the function of the parasympathetic nervous system is.

Accepted Answer

The parasympathetic nervous system (PNS)...

Exam 22: Autonomic Nervous System

Parasympathetic neuron cell bodies are located in:

Correct AnswerverifiedShow Answer

Some parasympathetic postganglionic neurons have their cell bodies in nuclei in the brainstem.

Correct AnswerverifiedShow Answer

Norepinephrine can stimulate nicotinic or muscarinic receptors.

Correct AnswerverifiedShow Answer

All cranial nerves except nerves I and II contain parasympathetic fibers.

Correct AnswerverifiedShow Answer

The sympathetic trunk runs from C8 to L4.

Correct AnswerverifiedShow Answer

Explain physiologically how a beta blocker affects heart muscle activity.

Correct AnswerAnswered by ExamLex AIBeta blockers work by blocking the actio...View AnswerShow Answer

Axon terminals that secrete acetylcholine are called cholinergic terminals.

Correct AnswerverifiedShow Answer

The preganglionic neurons of both the sympathetic and the parasympathetic divisions are cholinergic.

Correct AnswerverifiedTrue

An effect of sympathetic stimulation on the eye is constriction of the pupil.

Correct AnswerverifiedShow Answer

All of the following are characteristics of sympathetic preganglionic neurons except:

Correct AnswerverifiedShow Answer

The parasympathetic division is also called the thoracolumbar division.

Correct AnswerverifiedShow Answer

Under normal, nonstressful conditions, the parasympathetic division is dominant.

Correct AnswerverifiedShow Answer

The postganglionic neurons of both the sympathetic and parasympathetic nervous systems produce acetylcholine as their neurotransmitter.

Correct AnswerverifiedFalse

What two enzymes terminate the activity of norepinephrine? How do they compare with the enzymes that terminate the activity of acetylcholine? What effect does this difference have on the body?

Correct AnswerAnswered by ExamLex AIThe two enzymes that terminate the activ...View AnswerShow Answer

The autonomic nervous system functions chiefly in the:

Correct AnswerverifiedShow Answer

What brain structure acts as a "connection" between the cerebrum and the autonomic nervous system?

Correct AnswerAnswered by ExamLex AIThe brain structure that acts as a "conn...View AnswerShow Answer

Explain physiologically how summation influences effectors doubly innervated by the autonomic nervous system.

Correct AnswerAnswered by ExamLex AISummation influences effectors doubly in...View AnswerShow Answer

Which of the following is a description of the principle of antagonism as it relates to the autonomic nervous system?

Correct AnswerverifiedShow Answer

Once inside the sympathetic chain ganglion, the preganglionic fiber will always synapse with a sympathetic postganglionic neuron.

Correct AnswerverifiedFalse

Explain in general, what the function of the parasympathetic nervous system is.

Correct AnswerAnswered by ExamLex AIThe parasympathetic nervous system (PNS)...View AnswerShow Answer

Correct Answer
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Beta blockers work by blocking the actio...
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True

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False

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The two enzymes that terminate the activ...
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The brain structure that acts as a "conn...
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Answered by ExamLex AI
Summation influences effectors doubly in...
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Correct Answer
verified

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False

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Answered by ExamLex AI
The parasympathetic nervous system (PNS)...
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