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A drug blocking aldosterone would most directly reduce the reabsorption of:

AGlucose
BOxygen
CSodium
DProtein
Answer & Solution
Correct answer: C. Sodium
1. Trace the hormone to the ion it controls. 2. The adrenal cortex produces aldosterone. 3. Aldosterone directly influences renal function. 4. It stimulates sodium reabsorption. 5. Blocking it would therefore reduce sodium reabsorption. _Source: OpenStax Anatomy and Physiology 2e (CC BY 4.0), Ch 25 'The Urinary System', sections 25.1-25.10_
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