How is the amount of urine produced regulated?

The amount of urine produced is regulated by the amount of water present in the body. The level of dissolved nitrogenous waste in the urine is controlled by certain hormones that control the movement of water and sodium ions across the nephrons.

[Extra information:

 In human beings, urine formation involves three major processes namely glomerular filtration, tubular reabsorption, and tubular secretion, which take place in different parts of the nephron.

The nephron is the basic unit of the excretory system. Each nephron contains a renal corpuscle and a renal tubule. The renal corpuscle consists of capillaries called the glomerulus, enclosed by a Bowman's capsule.

At first, blood containing waste like urea is filtered by the glomerulus and is termed glomerular filtration.

During filtration, the substances like glucose, salts, amino acids, urea, water, etc. present in the blood pass through Bowman's capsule and enter the renal tubule of the nephron where the essential materials are reabsorbed into the blood through blood capillaries and only the waste substance like urea and excessive water is left behind in the tubule.

The nephron carries the urine into the collecting tubule of the kidney from where it reaches the ureter. From the ureter, the urine passes into the urinary bladder, which stores the urine until it is forced out of the body, through an opening known as the urethra.]



Simply Easy Learning

Updated on: 18-Jan-2023


Kickstart Your Career

Get certified by completing the course

Get Started