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← Human Body & HealthWhy does prolonged hypertension damage cerebral blood vessels?
A)Increased CO2 causes vasoconstriction
B)Shear stress damages endothelium✓
C)Baroreceptors reset at lower pressure
D)Osmosis dehydrates vessel smooth muscle
💡 Explanation
Hypertension creates elevated shear stress on vessel walls, triggering endothelial dysfunction, inflammation, and atherosclerosis, which weakens vessel integrity; because of this, aneurysms and rupture are more likely in the brain therefore option B is correct rather than CO2 mediated constriction or baroreceptor resetting.
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