Question : Describe the structure and functioning of nephrons.

1.	Question : Describe the structure and functioning of nephrons.
Answer» Solution :Nephrons are the basic filtering units of kidneys. Each kidney possesses large number of nephrons, APPROXIMATELY 1-1.5 million. The main COMPONENTS of the nephron are glomerulus, Bowman.s capsule and a long renal tubule. Functioning of a nephron :• The blood enters the kidney through the renal artery, which branches into many capillaries associated with glomerulus. • The WATER and solute are transferred to the nephron at Bowman.s capsule. • In the proximal tabule, some tubule, some substances such as amino acids, glucose, and salts are selectively, reabrosbed and unwanted molecules are added in the urine. • The filtrate then moves down into the loop where more water is obsorbed. • Form here, the filterate moves upwards into the DISTAL tubule and finally to the collecting duct. Collecting duct collects urine from many nephrons. • The urine FORMED in each kidney enters a long tube called ureter. From ureter it gets transported to urinary bladder and then into the urethra.

Discussion