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Question

Which is said to be the major site of selective secretion and reabsorption?


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Solution

Proximal convoluted tubule :

  1. The Proximal convoluted tubule is abbreviated as PCT.
  2. It is the main site for secretion and reabsorption.
  3. It forms a connection passage between Bowman's capsule and the loop of Henle.
  4. The epithelial cells present in the walls of PCT increase the reabsorption as it has a large surface area.
  5. It helps in the absorption of salts, water, proteins, glucose, etc
  6. It secrets organic ions by a sodium-dependent pathway.

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