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← Human Body & HealthWhy does excessive platelet aggregation increase stroke risk in atherosclerosis?
A)Reduced fibrinogen protein production occurs
B)Increased prostacyclin production reduces vasodilation
C)Unstable plaque rupture triggers thrombus formation✓
D)Endothelial nitric oxide synthesis enhances protection
💡 Explanation
Atherosclerosis creates plaque build-up. Because unstable plaques can rupture, this exposes thrombogenic material, triggering excessive platelet aggregation. This leads to thrombus formation, which can occlude cerebral arteries causing ischemic stroke, rather than endothelial protection through nitric oxide synthesis.
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