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← Human Body & HealthWhy does chronic hypertension, despite increased arterial pressure, sometimes fail to suppress aldosterone release effectively?
A)Reduced renal sodium reabsorption results
B)Baroreceptor sensitivity becomes heightened chronically
C)Angiotensin II sensitivity becomes upregulated✓
D)Increased ANP inhibits aldosterone secretion
💡 Explanation
Chronic hypertension can lead to structural and functional changes in the renin-angiotensin-aldosterone system (RAAS). Because chronic pressure elevation can upregulate angiotensin II receptors in the adrenal glands, aldosterone secretion persists despite high blood pressure; therefore, angiotensin sensitivity becomes upregulated, rather than other mechanisms inhibiting release.
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