If arterial pressure is elevated, which of these responses will baroreceptor signals trigger
A)a fall in plasma angiotensin II levels
B)increased activity in sympathetic nerves, causing peripheral vasoconstriction
C)an increase in epinephrine secretion from the adrenal medulla
D)increased total peripheral resistance

Question

Quizplus · Accepted Answer

Baroreceptors, which are sensitive to changes in arterial pressure, will trigger a response to lower elevated arterial pressure. This includes a fall in plasma angiotensin II levels, as angiotensin II is a potent vasoconstrictor that raises blood pressure. The activation of baroreceptors due to high arterial pressure will lead to responses aimed at lowering the pressure, which includes reducing the levels of substances like angiotensin II that would otherwise increase it.

If Arterial Pressure Is Elevated, Which of These Responses Will