A Drug That Activates Alpha₁-Adrenergic Receptors

Question

A drug that activates alpha₁-adrenergic receptors
A) causes a vasodepressor effect.
B) is classified as a (-) inotropic drug.
C) elevates blood pressure.
D) is classified as an antihypertensive drug.

Accepted Answer

Activation of alpha₁-adrenergic receptors causes vasoconstriction and an increase in blood pressure. Therefore, a drug that activates these receptors would elevate blood pressure. Choices A, B, and D are all incorrect as they describe effects opposite to what would occur with activation of alpha₁-adrenergic receptors.