What is the primary response to alpha-1 receptor stimulation?
a. Bronchodilation
b. Tachycardia
c. Vasoconstriction
d. Uterine relaxation
ANS: C
Stimulation of the alpha-1 receptors causes vasoconstriction of all blood vessels throughout the body. Alpha-1 receptor stimulation causes bronchoconstriction. Alpha-1 receptor stimulation does not cause tachycardia. Beta-2 receptor stimulation produces relaxation of smooth muscle tissue, such as the uterus.
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