The heart is the pumping organ of the circulatory system. The heart is a hollow muscular organ located in the chest, between the lungs. It is about the size of a clenched fist. It pumps blood to the different parts of the body. The heart is enclosed in a protective sac called percardium that enables the heart to smoothly contract and relax.
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THE HEART
The heart is the pumping organ of the circulatory system. The heart is a hollow muscular organ located in the chest, between the lungs. It is about the size of a clenched fist. It pumps blood to the different parts of the body. The heart is enclosed in a protective sac called percardium that enables the heart to smoothly contract and relax.
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