What is the role of the rib cage in the human body?

The rib cage plays a crucial role in protecting vital organs, specifically the heart and lungs. It consists of the ribs, sternum, and thoracic vertebrae, which together create a protective enclosure around these organs. This structure not only shields them from physical trauma but also plays a significant role in the respiratory process. The movement of the ribs during inhalation and exhalation facilitates the expansion of the thoracic cavity, allowing the lungs to fill with air. While the rib cage offers some support to the upper body, its primary function is as a protective barrier for the organs it encases. This focus on protection distinguishes its role from functions such as assisting in locomotion or mineral storage.