Osmoreceptors in the body are activated by changes in:
$I.$ blood volume
$II.$ body fluid volume
$III.$ ionic concentration
Which of the following options contains the correct statements?

$ADH$ influences water permeability in the

Erythropoietin is secreted by...

Juxtaglomerular cells of the kidney secrete which hormone?

Select the correct statements.
$(a)$ Angiotensin $II$ activates the cortex of adrenal gland to release aldosterone.
$(b)$ Aldosterone leads to increase in blood pressure.
$(c)$ $ANF$ acts as a check on renin-angiotensin mechanism.
$(d)$ $ADH$ causes vasodilation.
$(e)$ Vasopressin is released from adenohypophysis.
Choose the most appropriate answer from the options given below:

Volume of urine is regulated by