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Aldosterone secreted by the adrenal cortex acts on the DCT to
AIncrease reabsorption of sodium and water
BDecrease reabsorption of sodium and water
CIncrease secretion of glucose and urea
DDecrease all forms of tubular activity
Answer & Solution
Correct answer: A. Increase reabsorption of sodium and water
Aldosterone (released in response to angiotensin II or low Na+) acts on the DCT and collecting duct to increase Na+ reabsorption (with water following) and K+ secretion. It expands ECF volume.
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