The ____ system ____ down the ____ we eat. The ____ system pumps ____ and nutrients to all ____ of the body. The ____ system takes in ____ into the body and removes ____ from the body. The ____ system helps to ____ important ____ such as the heart, lungs and brain. It also ____ the body its ____. The muscular system works together with the ____ system to help the body ____.

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