In the heart there are four chambers. Those chambers help the heart pump blood. These chambers are called , on the top left is the left atrium and on the top right is the right atrium, on the bottom left is the left ventricle and on the bottom right is the right ventricle. These are the chambers inside your heart. The right side of the heart is blue because the blood doesn't have any oxygen and is about to go to the lungs to get oxygen. The left side of the heart has oxygen because the blood that just transfered to the lungs came back to the left side of the heart and is about to go around your body. The blood that has oxygen is going to your body because there are blood cells that need oxygen.
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