Skip to Main Content

Chapter 13. Autonomic Nervous System

Hypertension developed in a 26-year-old man after he began taking amphetamine to boost his energy and to suppress his appetite. Which of the following drugs would be expected to mimic the effects of increased sympathetic discharge on blood vessels?

A. Phenylephrine

B. Trimethaphan

C. Atropine

D. Reserpine

E. Albuterol

A 35-year-old woman in whom multiple system atrophy was diagnosed had symptoms indicative of failure of sympathetic nerve activity. List expected findings resulting from failure of sympathetic nerve activity to the ventricle of the heart, bronchial smooth muscle, sweat glands, and blood vessels.

A. Bradycardia, bronchial dilation, reduced sweating, and vasodilation.

B. Decreased ventricular contractility, bronchial constriction, profuse sweating, and vasodilation.

C. Tachycardia, bronchial constriction, reduced sweating, and vasoconstriction.

D. Decreased ventricular contractility, bronchial constriction, reduced sweating, and vasodilation.

E. Bradycardia, bronchial dilation, profuse sweating, and vasodilation.

A 45-year-old man had a meal containing wild mushrooms that he picked in a field earlier in the day. Within a few hours after eating the mushrooms, he developed signs of muscarinic poisoning. List an expected finding resulting from activation of muscarinic receptors on the lacrimal gland, SA node of the heart, sphincter muscle in the urinary tract, and sweat glands.

A. Increased salivation, bradycardia, relaxation of the urinary tract sphincter, and no change in sweating.

B. Decreased tear production, tachycardia, contraction of the urinary tract sphincter, and decreased sweating.

C. Increased tear production, bradycardia, relaxation of the urinary tract sphincter, and increased sweating.

D. Increased salivation, tachycardia, contraction of the urinary tract sphincter, and no change in sweating.

E. Increased tear production, bradycardia, contraction of the urinary tract sphincter, and increased sweating.

An MD/PhD candidate was studying control of pupillary diameter by stimulation of the ANS. What is the location of the cell bodies of preganglionic parasympathetic, postganglionic parasympathetic, preganglionic sympathetic, and postganglionic sympathetic nerves controlling pupillary diameter, respectively?

A. Pupillary nucleus, ciliary ganglion, cervical IML, and cervical paravertebral ganglion.

B. Second cranial nerve nucleus, pupillary ganglion, cervical IML, and cervical prevertebral ganglion.

C. Pupillary nucleus, otic ganglion, ...

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.