Aortic Semilunar Valve

The aortic semilunar valve is situated at the beginning of the aorta. This valve has three delicate cusps, or pockets, which permit blood flow only in one direction, allowing blood to flow out of the left ventricle up into the aorta, but prevents backflow into the ventricle. When the heart refills, the crescent-shaped valve balloons out, sealed alo...
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