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Human Body & Health

If the aorta's elastic fibers degrade, increasing arterial stiffness in a patient with hypertension, which consequence follows related to baroreceptor feedback?

A)Increased baroreceptor firing sensitivity
B)Enhanced ADH release by hypothalamus
C)Suppressed sympathetic nervous activity
D)Diminished baroreceptor reflex sensitivity

💡 Explanation

Arterial stiffness reduces the vessel wall's ability to distend in response to pressure changes; because baroreceptors sense stretch, their stimulation decreases. Therefore, the baroreceptor reflex sensitivity is diminished, rather than enhanced, leading to less effective blood pressure regulation.

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