Sternum segment (Sternebra, Stemebrae)

The sternum segment (Sternebra, Stemebrae) is one of four parts that, joining together during development, form the body of the sternum.

The sternum, or breastbone, is located at the front of the chest. It consists of three parts - the manubrium, the body and the xiphoid process.

The body of the sternum is formed in embryogenesis from four paired cartilaginous segments - sternebrae. Each sternebra corresponds to a specific thoracic vertebra.

At the end of the prenatal period, the sternebrae fuse into a single bone - the body of the sternum. In an adult, the boundaries between individual segments of the sternum are visualized in the form of transverse grooves.

Thus, the sternebrae are the embryonic rudiments of the sternum segments, from which its body is subsequently formed.

The sternum segment is one of four parts that join together during development to form the body of the sternum. The sternum, or breastbone, is located in the center of the front of the chest. It consists of three parts - the manubrium, the body and the xiphoid process.

The body of the sternum is formed by the fusion of four segments of the sternum, called sternebrae. Each sternebra develops from its own ossification center. In newborns, the sternebrae have not yet completely fused, and their fusion lines are visible as cartilaginous spaces. By the age of 25-30, the sternebrae are completely ossified and grow together into a single whole.

Thus, the sternum segments are an important part in the development of the human chest. Their correct formation and connection is necessary for the normal functioning of the respiratory and cardiovascular systems.

The sternum segment is part of the lower part of the human body. It has some features of anatomy and location. The sternum segment is also mentioned in mythology and science. In this text we will look at the sternum segment in detail.

The chest segment consists of four segments that form the body of the chest at different stages of development. The segments of the sternal arch develop initially through different mechanisms and are presented as distinct skeletal components during childhood, but they all join tightly together and develop into a single structure during adolescence.

In their research, Barbara Rodriguez and her colleagues published a number of articles on changes in the segmental structure of the chest wall as the fetus develops, using computed tomography techniques. Rodriguez found that while developing thoracic fold segments sometimes fuse together at varying intervals during fetal development, 95% of pectoral fold segments typically fuse before birth and mature until 32 to 33 weeks of gestation. During the postpartum period, the thoracic segment continues to grow and is involved in the movements of the chest, moving up and down until it reaches a mature state after 18 months of life.

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