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Your diaphragm contracts and expands when you breath. When the diaphragm contracts, air rushes into the lungs. When the diaphragm relaxes, air is exhaled.
I think you meant move air into the lungs. The muscle is the diaphragm.
diaphragm,lungs
the diaphragm
The importance of diaphragm is that it helps the functionality of the lungs. The diaphragm will contract and expand so as it regulate the air pressure in the lungs.
From the air drawn into the lungs by movement of the diaphragm
When you breathe in, your diaphragm will contract, causing your lungs to expand and suck in air. When you breathe out, your diaphragm will relax, causing your lungs to shrink and force out air.
The diaphragm moves down to make the lungs expand (inhalation)
The diaphragm moves down to make the lungs expand (inhalation)
your diafram
When the diaphragm expands, causes the lungs to become smaller forcing all the air in the lungs to be pushed out since there is more pressure. When the diaphragm contracts, it makes more room for the lungs to expand, forcing air in the lungs since there is more space.
Air moves into the lungs when the diaphragm is flattened. The diaphragm is relaxed (arched) during expiration.