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the semilunar valve between the left ventricle and the aorta, controlling the flow of blood.
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|Noun||1.||aortic valve - a semilunar valve between the left ventricle and the aorta; prevents blood from flowing from the aorta back into the heart|
semilunar valve - a heart valve with cusps shaped like half-moons; prevents blood from flowing back into the heart
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