The diaphragm acts.The diaphragm functional significance in the respiratory system, that is, the diaphragm will act like a piston. Help to hold the lungs down to let air into the lungs and pulmonary pressure in time to squeeze the air out of the lungs when breathing out. During breathing in and out. The diaphragm acts to prevent the expansion of the lungs and ribs. To swell and to push the abdominal organs in the body.
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