Answer:
The small piece of cartilage is called the xiphoid process.
Step-by-step explanation:
The sternum, also known as the breast bone, is a flat bone situated at the central aspect of the anterior part of the chest (thorax). Several ribs attach themselves to the sternum through cartilage. The sternum forms the anterior border of the thorax alongside the anterior aspect of the ribs.
The sternum is divided into three parts namely, the manubrium, body and xiphoid process. Ribs are attached to both the manubrium and body. The xiphoid process which is the most distal part of the sternum has no rib attachment.