The rib cage is a bony structure that surrounds and protects vital organs in the chest, such as the heart and lungs. It is made up of 12 pairs of ribs, which are curved bones that connect to the spine at the back and to the sternum (breastbone) at the front. This structure provides support and helps with breathing by allowing the chest to expand and contract. In addition to its protective role, the rib cage also plays a part in the body's overall posture and movement. The ribs are connected by flexible cartilage, which allows for some movement while maintaining stability. This flexibility is essential for activities like breathing and speaking.