Answers

2016-06-24T18:01:17+08:00
The diaphragm aids in controlling our breathing. Whenever we inhale, our diaphragm contracts and moves downward, thus giving space for the chest cavity to expand as air fills the lungs. The opposite happens when we exhale, the diaphragm loosens and moves upward when the chest cavity is in its normal size and air leaves the body
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