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The valve at the entrance to the aorta is the aortic valve. It also has three cusps and is a semilunar valve 165 27 Figures. 9-2 . ... calcium, salts, and scar tissue may contribute to arterial wall thickening. Thrombosis and embolism. Thrombosis is the formation of a blood clot (thrombus) within a vessel ... (ICD) detects potential ... ................
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