what is the heart?, veins, arteries, muscle, the smoller "dors", how many chambers does the heart have, 2, 4, 1, 3, which part the blood helps stop bleeding, plateles, white blood cells, pump blood, heart, what is the function of red blood calles, stop infection, blood, pump blood, carry oxigine, which blood vessel is the largest, vein, aorta, capillary, arteries, where does bolod go to get oxigen, kindneys, brain, vassels, lungs, What is the name of this project?, circulatory system, stomach, our teeth, the liver.

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