The Circulatory system is a system where the movements of your heart keep blood moving through your body. Your heart pumps blood through tubes called blood vessels. Nutrients and oxygen cycles throughout the body carried by the red blood cells. Your heart, blood, and blood vessels make up the Circulatory system. Some organs in the Circulatory system include the heart, red blood cells, veins and arteries. Veins and arteries are used to transport blood to and from the heart.
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