Heart - Pumps blood around the body., Circulation - The movement of blood through the heart and around the body., Arteries - Tubes that carry blood away from the heart., Veins - Tubes that carry blood back to the heart., Plasma - A liquid that pushes blood cells through the bloodstream., Red Blood Cells - Carry oxygen to the cells., White Blood Cells - Protects the body against harmful bacteria., Platelets - Small cells that work with plasma to stop bleeding.,




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