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-What does "D" represent on the diagram?
Coronary Artery
An artery that supplies blood to the heart muscle itself.
Lipitor
A prescription medication used to lower cholesterol and reduce the risk of heart attack and stroke.
Cholesterol
A waxy, fat-like substance found in all cells of the body, necessary for the creation of hormones, vitamin D, and substances that help digest foods.
Semilunar Valve
A type of heart valve with half-moon-shaped flaps that prevents blood from flowing back into the heart chambers after it has been ejected.
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