Circulatory System And The Heart | Explained In Simple Words

The circulatory system is a vast, complex network of blood vessels that serve as highways for transporting blood which contains life-sustaining molecules, such as nutrients, gasses, hormones and waste products, to the various organs of the body. The heart, also a part of the circulatory system, acts as a pump that pushes the blood with great force through the entire body and back.

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