Sternum
The sternum, or sternum, is the bone of the chest in humans and some other mammals. It is one of the largest and most significant bones in the chest skeleton. The sternum plays an important role in maintaining the structure of the chest and protecting the internal organs.
**Anatomy of the Thorax**: The rib cage includes the breastbone, ribs, sternal notch and a pair of sternums. At the beginning of embryo development, a coelomia is formed in place of the chest - a cavity common to the entire body, from which the structural elements of the future thoracic system are subsequently formed. The sections of the body develop in the later stages of intrauterine development, when the rudiments of the costal and keel parts, as well as the chest wall, appear. The part of the coelomia formation related to the anterior part of the torso is called the thoracic cavity. Its characteristic feature is the presence of an opening through which the vital fluid, bile, passes through the arterial ducts. Subsequently, these organs disappear under the action of an enzyme