Multiple choice

In which part of the tubule is water generally not reabsorbed?

  1. proximal convoluted tube

  2. loop of Henle

  3. collecting duct

  4. distal convoluted tube
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

While the descending limb of the loop of Henle is highly permeable to water, the distal convoluted tubule (especially the early segment) is generally impermeable to water, meaning water is not reabsorbed there unless acted upon by hormones like ADH in the late segment.

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