Multiple choice

Most reabsorption takes place in the:

  1. proximal convoluted tubule (PCT)

  2. distal convoluted tubule (DCT)

  3. renal cortex

  4. loop of Henle
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A Correct answer
Explanation

The proximal convoluted tubule (PCT) is lined with microvilli that greatly increase its surface area, allowing it to reabsorb the majority of water, ions, and organic nutrients from the filtrate back into the blood. Other parts of the nephron like the loop of Henle and DCT perform more specialized, fine-tuning reabsorption.

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