Volume of urine is regulated by

Which of the following are related to the control of human kidney functions?
$A.$ Osmoreceptors in the body get activated by excess loss of fluid,which results in the inhibition of $\text{ADH}$ secretion.
$B.$ $A$ fall in $\text{GFR}$ can activate the release of renin.
$C.$ Low blood flow to the atria stimulates the secretion of $\text{ANF}$.
$D.$ $\text{ANF}$ acts as a check on the renin-angiotensin mechanism.
$E.$ $\text{ADH}$ can also affect kidney function by its constrictory effect on blood vessels.
Choose the correct answer from the options given below:

The reabsorption of salts from the glomerular filtrate is regulated by . . . . . . .

Indicate whether the following statement is true or false:
$ADH$ helps in water elimination,making the urine hypotonic.

Macula densa refers to . . . . . . .

Vasopressin is concerned with