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Diaphragm is a fibromuscular partition between the chest and the abdomen. It is part of the respiratory system in that it is one of the main muscles of respiration. When we inhale it contracts and moves downwards towards the abdomen, thus increasing the capacity of the chest and allowing the lungs to expand vertically. During exhalation it relaxes and compresses the lungs, helping in exhalation.

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17y ago

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