who tell me what is meaning of dipahgram
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Diaphragm, dome-shaped, muscular and membranous structure that separates the thoracic (chest) and abdominal cavities in mammals; it is the principal muscle of respiration. ... human lungs. The lungs serve as the gas-exchanging organ for the process of respiration.
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a dome-shaped muscular partition separating the thorax from the abdomen in mammals. It plays a major role in breathing, as its contraction increases the volume of the thorax and so inflates the lungs
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