Which flat bone provides front support for the ribs?

The sternum, commonly known as the breastbone, is the flat bone that provides front support for the ribs. It is located in the center of the chest and connects to the ribs via costal cartilage, forming the anterior portion of the rib cage. This structure is vital for protecting the heart and lungs while also playing a role in the mechanics of breathing. The sternum acts as an anchor point for the rib cage, allowing for the expansion and contraction necessary for respiration. Its flat shape makes it an integral part of the skeletal system in ensuring that the thoracic cavity maintains its shape and provides support for the upper body.