In a person on a very low potassium diet, which part of the nephron would be expected to reabsorb the most potassium?
Correct Answer: A
Description: About 65% of the filtered K+ is reabsorbed in the proximal tubule, and another 20% to 30% is reabsorbed in the loop of Henle. Although most of the daily variation in K+ excretion is caused by changes in potassium secretion in the distal tubule and CD (collecting duct), only a small percentage of the filtered K+ load can be reabsorbed in these nephron segments.
Category:
Physiology
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