What best describes the thoracic cage's function?

The thoracic cage primarily serves to protect the respiratory organs, including the lungs and heart, which are vital for breathing and circulation. This structure, made up of ribs, the sternum, and thoracic vertebrae, forms a protective enclosure around these organs, safeguarding them from injuries that could occur due to external forces. Additionally, the thoracic cage plays a crucial role in the mechanics of breathing; it expands and contracts to allow air to flow into and out of the lungs. This protective function is essential for maintaining respiratory health and overall bodily function.

Understanding this function is vital in various medical and dental contexts, particularly for professionals who may perform procedures involving sedation or anesthesia, where the respiratory status of the patient is closely monitored and managed.