Heart - A strong muscle that pumps blood through the body., Cardiac muscle - The special muscle that makes up the heart and never stops working., Oxygenated blood - Blood that is full of oxygen., Deoxygenated blood - Blood that has little oxygen and carries waste like carbon dioxide., Left pump - Side of the heart that sends oxygenated blood to the body., Right pump - Side of the heart that sends deoxygenated blood to the lungs., Atrium - The top chamber of the heart where blood enters., Ventricle - The bottom chamber of the heart that pumps blood out., Aorta - The largest artery that carries blood from the heart to the body., Vena cava - A large vein that brings blood from the body to the heart.,

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