Diaphragm
From Wikipedia, the free encyclopedia
The diaphragm is a muscle that is at the bottom of the ribcage of mammals.
What it does [change]
When breathing in, the diaphragm pulls down so that the size of the lungs increases. When breathing out, the diaphragm rests and goes up making a dome shape, decreasing the size of the lungs and pushing air out.
Other websites [change]
