write down the steps of inhalation and exhalation
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Inhalation and Exhalation
During the process of inhalation, the lung volume expands as a result of the contraction of the diaphragm and intercostal muscles (the muscles that are connected to the rib cage), thus expanding the thoracic cavity. ... Upon exhalation, the lungs recoil to force the air out of the lungs.Inhalation is the process of intake of air into lungs, whereas exhalation is the process of letting air out from lungs. ... The composition of air which is inhaled is oxygen and nitrogen mix, while the composition of air which is exhale.
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