The sternum is a long flat bone situated in the center of the chest. It has the shape of a necktie and it is connected to the adjacent rib via cartilage forming the anterior portion of the rib cage, it protects the heart, lungs, and mediastinal structures.
The sternum gives origin and insertion sites for some of the critical upper limb muscles. It's formed of 3 parts : The manubrium , The body, and the xiphoid process. The manubrium is the flat upper part, the body is longest middle part, and the xiphoid is located at the inferior end. This is a 3D printable medical file converted form a CT scan DICOM dataset.