The baroreceptor reflex would cause which of the following events to occur if the reflex was caused by an increase in blood pressure?
A)increased parasympathetic stimulation of the heart
B)increased heart rate
C)increased cardiac output
D)increased force of contraction
E)increased sympathetic stimulation of the heart

Question

Quizplus · Accepted Answer

The baroreceptor reflex is a negative feedback reflex that responds to changes in blood pressure. An increase in blood pressure would cause the baroreceptors to increase their firing, which would then cause a decrease in sympathetic stimulation and an increase in parasympathetic stimulation of the heart. This would result in a decrease in heart rate and ultimately a decrease in blood pressure, bringing it back to homeostatic levels. Therefore, the best option is A, which describes an increase in parasympathetic stimulation of the heart.

The Baroreceptor Reflex Would Cause Which of the Following Events