What is the thoracic cage composed of?

The thoracic cage, also known as the rib cage, is a structure that provides protection to vital organs in the thoracic cavity, particularly the heart and lungs. It is primarily composed of ribs, the sternum (breastbone), and intercostal muscles, which are the muscles located between the ribs. The ribs curve around the body, attaching at the back to the thoracic vertebrae and in most cases, in the front to the sternum. This arrangement creates a protective framework while also allowing for movement and expansion during breathing, facilitated by the intercostal muscles. Understanding this anatomical structure is crucial, especially in contexts like dental anesthesia, where considerations may need to be made regarding respiratory function during procedures.