What is $JGA$?

When the volume of body fluid falls below normal,$ADH$:

Given below are two statements.
Statement $I$: Macula densa and $JG$ cells together form the $JG$ apparatus.
Statement $II$: The $JG$ apparatus plays an important role in reabsorption of glucose within kidney.
In the light of above two statements,choose the correct answer from options given below.

Which of the following hormones helps in the facultative reabsorption of water by the nephron?

The permeability of the wall of the collecting tubules is regulated by:

Aldosterone,a hormone of the adrenal gland,also influences urine formation as it regulates the amount of