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← Human Body & HealthWhy does aortic systolic pressure rise more sharply with age in patients exhibiting reduced elastin production?
A)Reduced baroreceptor sensitivity occurs.
B)Increased cardiac muscle contractility results.
C)Decreased blood viscosity reduces resistance.
D)Aortic compliance diminishes significantly.✓
💡 Explanation
Aortic systolic pressure increases with age due to stiffening of the aorta. Reduced elastin production impairs the aorta's ability to stretch and recoil during systole via decreased elastic recoil, therefore less volume is accommodated, and pressure rises more steeply, rather than baroreceptor sensitivity being directly impacted.
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