what is circulatory system?
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The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
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The blood circulatory system, consists of the heart, blood, and blood vessels. The circulatory system is an organ system that uses the heart to pump the blood through blood vessels – the arteries, veins, and capillaries, to and from all the tissues in the body
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