Sternum : It lies in the centre in thoracic region on ventral sides. It is a flat bone on the ventral midline of thorax.
Functions of sternum :
1. It provides the position for the attachment of ribs.
2. It takes part in the formation of rib cage which protects the heart and lungs.
Skeletal system : It forms the main supporting frame work of the body. It consists of the framework of bones and a few cartilage. The system plays a major role in the movement of the body.