Stimulation of ___________ receptors results in peripheral vasoconstriction, mild bronchoconstriction, and stimulation of metabolism
a. Alpha1
b. Alpha2
c. Beta1
d. Beta2
a
Rationale: a. Correct.
b. Alpha2 stimulation inhibits the release of preganglionic norepinephrine.
c. Beta1 cause an increase in heart rate, cardiac contractile force, automaticity, and conduction.
d. Beta2 stimulation causes vasodilatation and bronchodilation.
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