plz tell veryyy fasttt what is different between
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inhalation and exhalation .
during the proces of inhalation the lungs volume expand as a result of the contraction of the diaphragm and intercostal muscles ( the muscles that are connected to rib cage ) , thus expanding the thoracic cavity . due to the increase in volume the pressure is decreased , based in principle of boyle's law .
upon exhalation the lungs Recoil to force the air out of the lungs.....
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