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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