The ____ system brings blood to all the parts of your ____. The heart is a ____ and it's a litte to the ____ in the middle of your chest. The ____ blood cell delivers ____ to your system. The ____ blood ____ fight off foreing substances. When you cut yourself the ____ fix ____ and arteries to keep your blood inside where it belongs. ____ are the vessels that brings us from your ____ to your ____ and your ____. ____ blood cells take all the waste left by the cells and the ____ ____

Circulatory system

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