Question

What is ADH and what is its function?

Answer 1

ADH stands for antidiuretic hormone, which is also known as vasopressin.ADH is produced in the hypothalamus and stored in the pituitary gland. It's released from there into the bloodstream, and it affects how the kidneys work by letting them know how much water they need to keep in or get out of the body.

Function of ADH

ADH has following functions :-

• constricts blood vessels with rise in blood pressure. ADH is a vasoconstrictor. This means, ADH can constrict blood vessels, which increases blood pressure.
• The main function of ADH is that it acts on the kidney increasing reabsorption of water from the kidney tubules.
• Prevents Diuresis.

Below, is an explanation to understand only. Its not a part you need to write for exams.

Diuresis is phenomenon where a lot of urine is produced, and body loses water rapidly. ADH tells the kidney, how much water it should re - absorb from urine produced in kidneys.

When we drink less water, more ADH is produced, which, causes kidneys to absorb more water from urine. So, urine becomes yellow, and more concentrated.

When we drink more water, ADH is released less, so, less water is re absorbed from kidneys. So, more urine is produced.