Question
Tue May 29, 2012 By:
 

what is the function of diaphragm in breathing?

Expert Reply
Wed May 30, 2012
The diaphragm is the major muscle of respiration.
As the diaphragm contracts, it increases the length and diameter of the chest cavity and thus expands the lungs. This reduces the pressure outside the lungs. To equalize the pressure, air enters the lungs. When the diaphragm relaxes and moves back up, the elasticity of the lungs and chest wall pushes air out of the lungs.
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