Need muscular worker able to move up and down for moving air in and out of the lungs?

The muscular worker responsible for moving air in and out of the lungs is the diaphragm. This dome-shaped muscle contracts and flattens during inhalation, creating a vacuum that allows air to flow into the lungs. During exhalation, the diaphragm relaxes and moves upward, helping to expel air. This process is essential for respiration and maintaining proper oxygen levels in the body.