Thoracic Cavity: Anatomy, Location, and Contents

The cavity in the chest is called the thoracic cavity. It is the space between the neck and the diaphragm, which is a large muscle that separates the thoracic cavity from the abdominal cavity. The thoracic cavity contains the heart, lungs, trachea (windpipe), esophagus (food tube), and many major blood vessels and nerves.