Question

Several hormones are involved in the complex physiology of urinary filtration & blood pressure, an example of this would be the expected increase in blood levels of ANP after the heart detects:

a. Blood pressure is increased

b. increase in preload of heart

c. Walls of atria stretched

D. All of the above is correct

Answer 1

Increase in blood levels of ANP occurs after the heart detects -

Blood pressure is increased , Increase in preload of the heart , Walls of atria stretched

When the blood flow in Atrias of heart increases , the preload is increased which stretches the walls of atria. It is due to the increased blood pressure.

When the ANP is secreted , it induces vasodilation and release of Na+ ions in filtrate . Thus it reduces the increased blood pressure.

So all the above options are correct.