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← Human Body & HealthWhat happens to arterial blood pressure when a patient with hypertension exhibits increased aldosterone secretion despite normal plasma renin activity?
A)Decreased baroreceptor sensitivity develops slowly
B)Angiotensin II production increases dramatically
C)Sodium retention and blood volume expand✓
D)Potassium levels rise, inhibiting aldosterone
💡 Explanation
When hypertension is present and aldosterone secretion rises without elevated renin, the mineralocorticoid receptor activation increases sodium reabsorption in the kidneys. This causes expanded blood volume, and therefore increased blood pressure, rather than decreased baroreceptor sensitivity or altered angiotensin levels because these pathways are less directly affected.
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