diaphragm
Description
The thin muscle below the lungs and heart that separates the chest cavity from the abdomen.
When the diaphragm contracts, the lungs expand and take in air. When it relaxes, the lungs deflate and push air out.
The thin muscle below the lungs and heart that separates the chest cavity from the abdomen.
When the diaphragm contracts, the lungs expand and take in air. When it relaxes, the lungs deflate and push air out.