Question

Maximum amount of $H_{2}O$ could be reabsorbed in which part of nephron in the presence of vasopressin.

• A. Proximal convoluted tubule
• B. Distal convoluted tubule
• C. Loop of Henle
• D. Collecting duct

Answer 1

The correct option is A Proximal convoluted tubule

The proximal convoluted tubule is lined by simple cuboidal brush border epithelium which increases the surface area for reabsorption. Antidiuretic hormone or vasopressin prevents the excess loss of water through urine. When blood volume is decreased the Vasopressin acts on the Proximal convoluted tubule and causes maximum water reabsorption which results in an increase in blood volume.

So, the correct answer is 'Proximal convoluted tubule'.