A cavity bounded by the ribs and diaphragm is called:

Explanation

The cavity bounded by the ribs and diaphragm is called the thoracic cavity, or chest cavity. It is a large, hollow space that contains the heart, lungs, major blood vessels, and other important structures of the respiratory and cardiovascular systems. The thoracic cavity is separated from the abdominal cavity by the diaphragm, which is a thin sheet of muscle that helps to control breathing by contracting and relaxing.