Your circulatory system is an amazing thing.

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The function of the circulatory system is to nourish your cells, by circulating blood throughout your body. At the same time as the blood in your body brings oxygen and nutrients, it removes carbon dioxide and other waste.

Your circulatory system is made of the heart, the blood it pumps, and the blood vessels that it travels through. Blood vessels include arteries which bring blood away from the heart, veins which bring blood back to the heart, and capillaries which are the smallest blood vessels. Your blood is made mostly of plasma, which is the liquid that contains hormones, nutrients and red/white blood cells.

You can care for your circulatory system by not smoking, and maintaining a healthy weight. Eating , sleeping and exercising well will keep your heart healthy.