What is the correct ordering of the sternum from superior to inferior?

The correct ordering of the sternum from superior to inferior is manubrium, body, and then xiphoid process.

The manubrium is the uppermost portion of the sternum and is broad and flat, providing attachment points for the clavicles and the first pair of ribs. Below the manubrium is the body of the sternum, which is the longest part and provides a central section for rib attachments. Lastly, the xiphoid process is the small, cartilaginous section at the lower end of the sternum, which can become ossified with age. This anatomical progression is important not only for understanding human anatomy but also for recognizing how these parts articulate with the ribs and contribute to the overall structure and function of the thoracic skeleton.