Medically reviewed by Kashif J. Piracha, MD The diaphragm is a dome-shaped muscle that separates the chest from the abdomen. This muscle, also called the thoracic diaphragm, is the main muscle used ...

Throughout the postseason, the superstar guard has periodically popped up on Dallas' official injury report with a right knee sprain ... "Your thoracic cavity (chest cavity) is a space inside ...