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Exam 14: The Autonomic Nervous System

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Question 41

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

A) pelvic nerves
B) vagus (X) nerves
C) lumbar splanchnic nerves
D) cephalic plexus

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Question 42

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The vasomotor tone of blood vessels is mostly under sympathetic control.

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Question 43

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Which type of drug would be useful in dilating the pupils for an examination of the retina?

Which is a uniquely sympathetic function?

Which of the following drug classes would be useful for smoking cessation products?

Baroreceptors in the carotid sinus monitor blood pressure.When the carotid sinus is stretched by blood pressure or manipulation,a feedback response through the vagus (X)nerve can be blocked by atropine.How would external stimulation of the carotid artery,such as carotid massage,affect the heart rate?

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

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.

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

All visceral organs receive dual innervation from both the sympathetic and parasympathetic divisions of the ANS.

Discuss a way in which the sympathetic and parasympathetic divisions cooperate with each other.

Explain the concept of dual innervation in the autonomic nervous system.Provide two examples.

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

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

The celiac ganglion is primarily associated with the sympathetic division.

Where would you NOT find autonomic ganglia?

The mushroom poison muscarine can bind to receptors on ________.

Richard has been under great stress and has complained of migraine headaches for weeks.He tried all kinds of drugs,with little effect.When he was at the end of his rope,a friend suggested yoga and meditation.Having nothing to lose,he tried them and after several months,felt like a new person.How could these practices help him?

The parasympathetic fibers of the ________ nerves innervate smooth muscles of the eye that cause the lenses to bulge to accommodate close vision.

Over 90% of all parasympathetic fibers are derived from cranial nerves ________.