Question

Name the places where ultrafiltration and reabsorption of substances take place in the kidney.

Answer 1

Ultrafiltration:

1. Ultrafiltration is a type of filtration which occurs under high pressure.
2. In this process, the blood passes through the glomerulus under high pressure. This facilitates filtration of the blood plasma through the thin, porous epithelium of the glomerulus and Bowman capsule’s wall.
3. Ultrafiltration takes place in the glomerulus.

Reabsorption:

1. Reabsorption refers to the absorption of water, glucose, amino acids, salts, and other useful substances from the glomerular filtrate or ultrafiltrate.
2. About 99% of glomerular filtrate is reabsorbed by ‘kidney tubule or nephron’.
3. Different parts of the nephron such as proximal & distal convoluted tubules, Henle's loop, and collecting duct play a major role in reabsorption.
4. Most of the reabsorption takes place in proximal convoluted tubules (PCT).