61) In response to the loss of blood, compensatory mechanisms come into play at

Question

61) In response to the loss of blood, compensatory mechanisms come into play at various times to blunt decreases in MAP and restore blood volume to normal. Which of the following most accurately depicts the temporal order of effectiveness of three of these mechanisms, from earliest to latest? A. Aldosterone, sympathetic nerves, angiotensin II B. Angiotensin II, aldosterone, sympathetic nerves C. Angiotensin II, sympathetic nerves, aldosterone D. Sympathetic nerves, aldosterone, angiotensin II E. Sympathetic nerves, angiotensin II, aldosterone

Explanation / Answer

Qno 6! Ans. ( E part)

Symphathetic nerves -------- angiotensin II -------- aldasterone

Activation of symphathetic nerveous system stimulates angiostanin I in juxtagulamular calls in kidney which leads to activation of angiostanin II which increases blood flow to arterial system and angiotensin II activates aldosterone which retians Na level to reabsorb water thus increades blood flow.

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