Drugs known as beta-blockers may be useful for treating

A) constipation.
B) diarrhea.
C) excessive salivation.
D) excessive heart rate.
E) depressed heart rate.


Answer: D

Anatomy & Physiology

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Semen contains all of the following components EXCEPT:

a. Sperm b. Epididymal fluid c. Prostatic fluid d. Bulbourethral fluid e. Seminal fluid

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Which body region is controlled by the largest area of the motor cortex?

A. Trunk B. Toes C. Neck D. Shoulder E. Fingers

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Immune defense against cancer depends on

a. the release of inteferon. b. the presence of macrophages. c. the presence of cytotoxic cells. d. two of these. e. all of these.

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