2. What is it?
The Diaphragm is a dome shaped muscle under
the lungs.
3. What does it do?
It helps you breathe. When you breathe out it
pushes on the lungs to build pressure so the air
can exit, and when you breathe in it releases the
pressure.
4. It works like this....
To check out how this works check out the video under this
slideshow!!!!!!!!!!!!(: