The heart, the soul and all that loves them...
The dome shaped muscle that works with the lungs is the diaphragm.
diaphragm
if by on it's own you mean subconsciously, then the heart and the diaphragm
The diaphragm is both a voluntary and involuntary muscle. That means that it works with and without your having to think about it. It works just like any other muscle, in that electrical impulses are sent from the brain down the spinal cord into nerves connected to it. The special thing about it, is that those signals come from two different places in the brain.
The Diaphragm - a membrane of muscle and tendon, flexes to reduce ambient pressure in the thorax, and cause the lungs to compensate by drawing in air. Exhalation works in reverse.
The Diaphragm controls breathing. It works together with the lungs.
The diaphragm is a dome-shaped muscle located beneath the lungs that contracts and flattens when you inhale, creating a vacuum in the chest cavity that allows air to rush into the lungs. When you exhale, the diaphragm relaxes and returns to its dome shape, pushing air out of the lungs. This process of contraction and relaxation allows for breathing to take place.
The part of the nervous system that works closely with the respiratory system for inhalation is the phrenic nerve. It controls the diaphragm, the primary muscle involved in breathing. Stimulation of the phrenic nerve causes the diaphragm to contract, enabling the process of inhalation.
It works 82% of the time
The diaphragm is the muscle below the lungs, and above the stomach, responsible for breathing. The diaphragm works by pulling tighter, thus decreasing the pressure in the lungs, pulling air in through the trachea. To exhale, the diaphragm relaxes, and chest muscles contract, pushing the air back out.
the chest rises the diaphragm curves upward air rushes in the chest moves downward the diaphragm flattens air rushes out
The muscle is the "diaphragm" muscle. It is located beneath the lungs. When it moves down and away, it creates lower pressure around the lungs, and the air pressure outside the body flows into the lungs. When it moves up and in, it compresses the lungs, increasing the pressure to force the air back out.