thoracic cavity, also called chest cavity, the second largest hollow space of the body. It is enclosed by the ribs, the vertebral column, and the sternum, or breastbone, and is separated from the abdominal cavity (the body's largest hollow space) by a muscular and membranous partition, the diaphragm.

What cavities are in the thoracic cavity?

Thoracic Cavity: The ventral body chamber that contains the pericardial cavity (the heart) and the pleural cavity (the lungs).

Which organs are visible in the thoracic cavity?

The human thorax includes the thoracic cavity and the thoracic wall. It contains organs including the heart, lungs, and thymus gland, as well as muscles and various other internal structures.