what is a diaphragm and its role in breathing
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Answer:
its increases the area of lungs by moveing upward and downward
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Answer:
answer is given by explanation part
Explanation:
The diaphragm is located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily.
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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