ReabsSecr — KinFAST

Adaptive test — questions are selected based on your ability estimate. — Tag: PCTvsCollectingDuct

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A renal physiology student compares the proximal convoluted tubule (PCT) and the collecting duct in their roles in reabsorption. Which combination of statements best contrasts these two segments?

The PCT performs bulk, non-regulated reabsorption of a large fraction of filtered water and solutes; the collecting duct performs fine-tuned, hormonally regulated reabsorption of water (via ADH) and sodium (via aldosterone) Both segments perform identical reabsorption under identical hormonal control The PCT reabsorbs nothing; all reabsorption occurs in the collecting duct under hormonal control The PCT is hormonally regulated by ADH and aldosterone; the collecting duct performs bulk, obligatory reabsorption

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