(MSCDFSM)

(B) Enumerate the mechanism that regulates blood pressure ?

Ans-Falling blood pressure stimulates increased sympathetic activity, which leads to increased heart rate, contractility, vasoconstriction, and blood pressure. Long-termblood pressure regulation involves renal regulation of blood volume via the renin- angiotensin mechanism and aldosterone mechanism. Your cardiovascular system must maintain an adequate blood pressure in order for blood to be delivered to all of your organs and tissues. If the pressure drops too low, the organs will not receive an adequate perfusion of nourishing blood. If the pressure rises too high, it could damage the delicate inner lining of your blood vessels and eventually lead to heart disease or a stroke. In this lesson, you will learn how the body regulates the blood pressure to keep it from going too low or too high.