Which of the following correctly describes how the baroreceptor reflexes would respond to a fall in blood pressure?The cardioinhibitory center would be stimulated.The vasomotor center would increase sympathetic output to arterial smooth muscle to increase TPR.Contractility would decrease and heart rate would increase.Baroreceptors would be stimulated and send increased impulses to the cardiovascular control center in the medulla.The cardioacceleratory center would increase parasympathetic output to the heart.

Baroreceptors are mechanoreceptors (sensors or modified nerve endings) found in the blood vessels and their function is to detect the change in blood pressure and participate in the regulation of it (so that proper blood pressure can be maintained). The action of baroreceptors or baroreflex works as a negative feedback loop: when the blood pressure is decreased, baroreflex activation also decreases (baroreceptors are active even at normal blood pressures) and causes heart rate to increase.

Decreased blood pressure leads to lower baroreceptor “firing” which then results in an increase in sympathetic stimulation of the heart and sympathetic stimulation of the peripheral vessels, resulting in vasoconstriction. As a result blood pressure increase.

adefioyelaoye adefioyelaoye · Answer 2 · 2021-11-29T14:06:49+01:00

The baroreceptor reflexes respond to a fall in blood pressure by the

vasomotor center would increase sympathetic output to arterial smooth

muscle to increase TPR(total peripheral resistance).

Baroreceptors are found in the body and they help in the regulation of the

pressure of the blood through some mechanisms. An example of the

mechanism include response to a fall in blood pressure through

vasoconstriction by increasing sympathetic output to the arterial smooth

muscles in order for the increase in TPR to occur.

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