What name is given to the sheet of muscle that helps move air in and out of the lungs?

Name: What name is given to the sheet of muscle that helps move air in and out of the lungs?
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The diaphragm is a sheet of muscle that sits at the bottom of the thoracic cavity and separates the chest from the abdomen. It plays a key role in breathing by contracting and relaxing to create changes in pressure that help move air in and out of the lungs.

What Name Is Given to the Sheet of Muscle That