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BIOLOGY TOPIC 6 HUMAN PHYSIOLOGY
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Question:
Describe the process of atherosclerosis developing? (6)
Author: Sammy UniverseAnswer:
1) fatty deposits (Atheromas) develop in arteries = reduces lumen size (stenosis) 2) restricted flow = increases P in artery = damaged arterial wall 3) damaged region repaired with fibrous tissue = reduces elasticity of the wall 4) as the smooth lining is degraded = lesion forms (atherosclerotic plaque) 5) if it ruptures = blood clotting starts = forms thrombus (blood clot in vessel) 6) if thrombus is moved = embolus = blockage in a smaller arteriole
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