What is the function of $Renin$?

The kidneys not only remove the waste products from the blood but also play a very important role in maintaining:

Arrange the following events occurring in the Renin-Angiotensin mechanism in the correct order:
$A$. Increase in blood pressure and Glomerular filtration rate.
$B$. Reabsorption of $Na^+$ and water from distal parts of the tubule due to Aldosterone.
$C$. Fall in Glomerular filtration rate.
$D$. Vasoconstriction by Angiotensin $II$ and release of Aldosterone.
$E$. Renin converts Angiotensinogen into Angiotensin $I$,followed by Angiotensin $II$.

If the level of $ADH$ in the blood decreases,then......

$ANF$ (Atrial Natriuretic Factor) is released by

Vasopressin is associated with which of the following?