There are 26 bones in the chest of a human body. These bones include 24 ribs in 12 pairs, a sternum , and a hyoid bone . These bones provide structural support and flexibility, facilitating essential functions like breathing and movement of the upper limbs. Together these bones form the rib cage and protect the vital organs such as the lungs and ... The bone covers and protects the thoracic organs, such as the heart and lungs, from any external shock. Where is the Sternum Bone Located The bone is located in the center of the chest , making up the anterior thoracic wall. As it lies superficially, it is easily palpable below the skin of the chest in the midline. The sternum (also called the breastbone) is a long, flat bone that protects the underlying muscles, organs, and important arteries within the front and center of the chest . This includes the lungs, heart, and stomach, along with all of their intricate blood vessels, muscles, and cartilage. The thymus sits just behind it. The sternum also acts as a joining structure to the upper ribs on either side of the body. Learn about the sternum , a flat, T-shaped bone at the center of your chest that protects your organs and muscles. Find out what causes sternum pain and how to treat it.