The sternum is a flat bone located in the center of the chest. The upper part of the sternum is wider, which is called sternal stalk. The middle part of the sternum is rectangular, called the sternum body. The lower part of the sternum is a thin bone block with uncertain shape, called xiphoid process. The xiphoid process is located at the lower end of the sternum, the upper end is connected with the sternum, and the lower end is free, which is about flat to the ninth thoracic vertebra. The sternum looks like a downward sword. The xiphoid process is the lowest part of the sternum. ?
Xiphoid process? There is a xiphoid cartilage at the lower end of the chest wall in the heart area, which plays a role in protecting the heart. When the xiphoid cartilage violently hits here, the heart is strongly shaken, which makes the xiphoid cartilage directly compress the heart, and at the same time can directly stimulate the central nervous system of the stomach, making people feel chest tightness, shortness of breath and difficulty breathing immediately, or cartilage stubble is easy to puncture the heart because of xiphoid cartilage fracture.