blood,heart,.blood vessels - the circulatory system is made up of, blood vessels - thin tube in which blood flows, sethoscope - an instrument used by doctors to listen the heartbeat, windpipe - the air we breath goes into, saliva - a substance that gets mixed with the food, large intestine - the digestive juice is present inside the, 600 - how many muscles are present inside our body, cells - the smallest entity of our body is, tissues - many cells join together to form , organs - tissues join together to form,

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