Because of Periodic, Involuntary Jerking Movement of His Hands and Head

question 408

Essay

Because of periodic, involuntary jerking movement of his hands and head, Mr.Jones is being treated with the beta-blocker drug propranolol (Inderal)for his essential familial ________.

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Definitions:

Parasympathetic Nervous System

A branch of the autonomic nervous system responsible for conserving energy and promoting "rest and digest" responses.

Postganglionic Axons

The axons of neurons that relay signals from the autonomic ganglia to the target organs in the peripheral nervous system.

Preganglionic Fibers

Nerve fibers that extend from the central nervous system to the ganglia in the autonomic nervous system.

Pectoralis Major

A large muscle in the upper chest that plays a key role in the movement of the shoulder joint, including flexion, adduction, and internal rotation.