WHAT IS The main function of diaphragm?

Answer:
It creates a partial vacuum (region of lower pressure) in your thorax (chest area) to draw air into the lungs (inspiration). When the air has exchanged some of the oxygen for carbon dioxide, the diaphragm pushes the air out (exhalation).
So the simple answer is "breathing".
First answer by Sikuan. Last edit by Sikuan. Contributor trust: 109 [recommend contributor recommended]. Question popularity: 1 [recommend question].