What Is a Cardiovascular System

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The cardiovascular system, also known as the circulatory system, is a system of the body comprised of the heart, the blood, and the blood vessels. This system is responsible for transporting blood. As the cardiovascular system moves blood throughout the body, cells receive oxygen and nutrients.

The parts of the cardiovascular system include the heart, which is the organ that pumps the blood, and a network of blood vessels: Arteries: The blood vessels that take blood away from the heart.