hlo what is meant by anotomy of heart...❤️❤️
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The heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the cardiovascular system.
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A hollow, muscular organ, the pump of the circulatory system. Its wall has three layers: the outer epicardium, a serous membrane; the middle myocardium, made of cardiac muscle; and the inner endocardium, endothelium that lines the chambers and covers the valves.
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