PATHOLOGY

Detailed explanation-1: -The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges.

Detailed explanation-2: -Your lower esophagus, stomach, intestines, liver, and kidneys are below the diaphragm, in your abdominal cavity. The left and right phrenic nerves send signals to control the diaphragm, which receives its blood supply primarily from the inferior phrenic arteries.

Detailed explanation-3: -During normal expiration, the diaphragm relaxes allowing the air to flow out as the lungs deflate. The ribs protect the lungs and expand as we inhale to facilitate space for the lungs to expand like the diaphragm. The ribs then contract expelling the air in the lung.