Renal Physiology · NEET PG Preparation Physiology

Which of the following segments of the renal tubule has the highest fractional reabsorption of filtered sodium and water under normal physiological c…

Practice question from Renal Physiology (NEET PG Preparation Physiology), with the correct answer and a step-by-step solution.

easy · MCQ · Q-BDA2C6

Which of the following segments of the renal tubule has the highest fractional reabsorption of filtered sodium and water under normal physiological conditions?

  1. A.Proximal convoluted tubuleCorrect answer
  2. B.Thin descending limb of loop of Henle
  3. C.Distal convoluted tubule
  4. D.Cortical collecting duct

Solution

The proximal convoluted tubule reabsorbs approximately 65% of filtered sodium, water, bicarbonate, and potassium, and virtually all filtered glucose and amino acids, making it the site of highest fractional reabsorption in the nephron.

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