The phrenic nerve is the nerve that controls your diaphragm, the dome-shaped muscle that helps you breathe. The diaphragm muscles expand and tighten the lungs to help you draw air into them. The ...

Diaphragm spasms feel like twitches in the area between the chest and the abdomen. They can occur with or without pain. Possible causes include an injury, nerve irritation, or a rare condition known ...

The diaphragm is the primary muscle used in respiration, which is the process of breathing. This dome-shaped muscle is located just below the lungs and heart. It contracts continually as you breathe ...