A) Constriction of arterial luman reduces the blood flow
B) Loss of dilatation ability of the arterial wall and its rupture
C) Cholesterol deposition at the inner wall of the artery
D) Proliferation of the vascular muscles
Correct Answer: B
Solution :
Atherosclerosis is a condition of wall thickening and narrowing of lumen of medium and large arteries due to formation of atheromas or plaques of cholesterol of at their inner wall. The smooth muscles also proliferate probably caused by release of Platelet Derived Growth Factor (PDGF). Atherosclerosis leads to hypertension, reduced blood supply, angina, heart attack or stroke etc.
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