The cardiovascular system is also known as the

The cardiovascular system is also known as the circulatory system.

It is made up of the heart, the blood vessels namely arteries, veins and capillaries, and approximately five liters of blood.

The circulatory system's major functions are to transport  oxygen, hormones, and nutrients to every cell in the body, and to tale away cellular waste products from the cells such as carbon dioxide  and bring them to excretory organs  where they are expelled out of the body.

The circulatory system is kept running by the heart, which is a muscular organ the size of the closed fist of an adult. It pumps about 5 liters of  blood every minute throughout the body.

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