With regard to the baroreceptor reflex,which event occurs first?
A)Activation of the baroreceptors in response to a drop in blood pressure
B)Reflex tachycardia
C)Stimulation of the sympathetic nerves
D)Stimulation of the glossopharyngeal (CN IX) and the vagus (CN X) nerves

Question

Quizplus · Accepted Answer

Activation of the baroreceptors in response to a drop in blood pressure occurs first in the baroreceptor reflex. The other events, such as reflex tachycardia, stimulation of sympathetic nerves, and stimulation of the glossopharyngeal and vagus nerves, occur in response to the activation of the baroreceptors.

With Regard to the Baroreceptor Reflex,which Event Occurs First