3.
Explain the role of diaphragm in the process of breathing
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Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.
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diaphragm is used to toggle between the outer and inner pressure of the lungs. it moves up to cause a pressure difference and release air and it moves down to suck air...
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