Question

Name the three main hormones are involved in the regulation of renal function?

Answer 1

Renal functions are the functions of the kidney. The kidney is primarily involved in the process of excreting out the waste materials from the body and the process is known as excretion. Kidneys also help in the maintenance of pH and ionic balance so they are secondarily involved in osmoregulation.

Complete answer:
The functioning of the kidneys is efficiently monitored and regulated by hormonal feedback mechanisms involving the hypothalamus, JGA (Juxtaglomerular Apparatus), and to a certain extent, the heart.
Control by ADH:
Osmoreceptors in the body are activated by changes in blood volume, body fluid volume, and ionic concentration.
An excessive loss of fluid from the body can activate these receptors which stimulate the hypothalamus to release antidiuretic hormone (ADH) or vasopressin from the neurohypophysis. ADH facilitates water reabsorption from the latter parts of the tubule, thereby preventing diuresis (excessive urination).
When there occurs an increase in body fluid volume can switch off the osmoreceptors and suppress the ADH release to complete the feedback ADH can also affect kidney function by its contradictory effects on blood vessels. This causes an increase in blood pressure. An increase in blood pressure can increase the glomerular blood flow and thereby the GFR.
Control by Juxtaglomerular apparatus:
JGA operates a multi hormonal Renin-Angiotensin-Aldosterone System (RAAS). A fall in glomerular blood pressure/GFR can activate the JG cells to release renin which converts angiotensinogen in the blood to angiotensin I and further to angiotensin II.
Angiotensin II increases glomerular blood pressure by causing arterioles to constrict. It also increases blood volume in two ways: Firstly, by signaling the PCT to reabsorb more NaCl and water, and secondly, by stimulating the adrenal gland to release aldosterone, a hormone that induces the distal parts of the tubule to reabsorb more Na+ and water.
This results in an increase in blood volume and pressure and leads to completing the feedback circuit by supporting the release of renin.
The three hormones that work are- Renin, Aldosterone, and Angiotensin.

Note:
Antidiuretic hormone (ADH) is one of the hormones that efficiently monitors and regulates the functioning of the kidneys. Antidiuretic hormone gets produced from the posterior pituitary and it prevents wide swings in water balance, helping to avoid dehydration or water overload. ADH facilitates reabsorption of water by the distal parts of the kidney tubules and thereby prevents diuresis. Deficiency of ADH leads to diabetes insipidus