The center of the of your circulatory system is your ____ It has a big job to do because it pumps ____ to every cell in your body. Your heart never stops beating. There are lots of blood vessels attached to your heart. Blood vessels that carry blood to your heart are called ____; vessels that carry blood away from your heart are called ____. Blood is the fluid that keeps our bodies going. It is a transport system that ____ to all parts of the body. It ____ and helps us ____ to keep our body healthy.

Circulatory System

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