Electrolyte Balance · Physiology

The majority of renal calcium reabsorption occurs in the:

  1. Distal convoluted tubule
  2. Cortical collecting duct
  3. Proximal convoluted tubule
  4. Thin descending limb of Henle
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Correct answer: Proximal convoluted tubule

Most calcium is reabsorbed passively in the proximal tubule. This parallels sodium and water reabsorption.

Difficulty: Medium Question 14 of 20

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