Question

Proximal convoluted tubule of nephron is responsible for the

• A. Filtration of blood.
• B. Maintenance of glomerular filtration rate.
• C. Selective reabsorption of glucose, amino acid, NaCl and water.
• D. Reasbsorption of salts only.

Answer 1

Answer: (C)

Selective reabsorption of glucose, amino acid, NaCl and water.

The proximal convoluted tubule is the continuation of Bowman's capsule. It helps in the reabsorption of most part of NaCl, water, glucose and amino acids due to the presence of many transporters and aquaporins.

Glomerulus contains podocytes that help in the filtration of blood and formation of glomerular filtrate.

Glomerular filtration rate is maintained by the rate of blood flow through the afferent arterioles but doesn't depend on proximal convoluted tubule.

Proximal convoluted tubule helps in reabsorption of not only salts but also water, glucose, amino acids.

So, the correct option is C.