Increasing the Firing Rate of the Baroreceptors

Question

Increasing the firing rate of the baroreceptors
A) Activates sympathetic output to the heart
B) Activates parasympathetic output to the heart
C) Inhibits parasympathetic output to the heart
D) Causes a reflex tachycardia
E) Causes venoconstriction

Accepted Answer

Increasing the firing rate of the baroreceptors, which are sensitive to changes in blood pressure, activates the parasympathetic nervous system. This leads to a decrease in heart rate (bradycardia) and a reduction in blood pressure, as the body attempts to counteract the perceived increase in blood pressure that triggered the increased baroreceptor firing.