A Sudden Rise in Blood Pressure is Most Likely to Produce

Question

A sudden rise in blood pressure is most likely to produce a baroreceptor-induced
A) (+) inotropic effect.
B) bradycardia.
C) narrowed pulse pressure.
D) increased heart rate.

Accepted Answer

A sudden rise in blood pressure results in an increased firing rate of baroreceptors, which leads to activation of the parasympathetic nervous system and decreased sympathetic activity. One of the main effects of parasympathetic activation is a decrease in the heart rate, resulting in bradycardia.