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Exam 14: The Autonomic Nervous System

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Question 21

True/False

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Somatic and visceral reflex arcs are similar, but visceral reflex arcs lack afferent fibers (visceral sensory neurons).

A) True
B) False

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Question 22

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The route of major parasympathetic outflow from the head is via the_________ .

A) sympathetic trunk
B) vagus (X) nerves
C) phrenic nerve
D) sacral nerves

E) A) and B)
F) B) and C)

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Question 23

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Describe outcome criteria that can be used to evaluate whether a patient is effectively coping with a stressful problem.

Norepinephrine-releasing fibers are called cholinergic fibers.

The autonomic and somatic nervous systems are two separate systems that work totally independent of each other and lack any functional overlap.

The smooth muscle of the digestive viscera is served largely by the _________ .

Which is an exclusively sympathetic function?

Control of temperature, endocrine activity, and thirst are functions associated with the__________ .

Visceral reflexes include the reflexes that empty the bladder and the rectum.

The parasympathetic division innervates more organs than the sympathetic division.

Which of the following is NOT a plexus of the vagus (X) nerve?

The autonomic nervous system may cause activation or inhibition, depending on the division that is active and the target that is affected.

Sympathetic nerves may leave the spinal cord at which vertebra?

Because many of the same cardiac cells are innervated by both parasympathetic and sympathetic fibers, the influence of the two divisions on the heart is synergistic, meaning contraction is strongest when both divisions act together.

The craniosacral division is another name for the parasympathetic division.

Where would you NOT find autonomic ganglia?

)-adrenergic receptors are the only receptors found on the heart.

The gray rami communicantes consist of myelinated postganglionic fibers.

The effect of the parasympathetic division on the penis is vasodilation causing erection, while ejaculation is due to sympathetic stimulation.

Autonomic ganglia are motor ganglia, containing the cell bodies of motor neurons.