Intussusception

Intussusception: description and application in embryology

Intussusception is a process in embryology that describes the concavity or inflow of one layer of tissue into another. This phenomenon occurs during embryonic development, when different layers of tissue begin to form organs and bodily systems.

During intussusception, one layer of tissue, called the stratum intussusception, extends into another layer, called the stratum intussusception. This can occur in different parts of the embryo's body and leads to the formation of various organs and tissues, such as the intestines, lungs, bladder and others.

One of the best known examples of intussusception is intestinal formation. During this process, part of the endoderm, the inner layer of the embryo, begins to invaginate into the mesoderm, the middle layer of tissue. This leads to the formation of the intestinal tube, which eventually becomes the fully formed intestine.

Invagination can also play an important role in the formation of other organs and tissues. For example, during bladder intussusception, a portion of the epithelium begins to flow into the mesenchyme, which ultimately leads to the formation of the bladder.

Intussusception may also play an important role in various pathologies. For example, intussusception may cause children to develop intussusception, which can lead to serious health problems.

Thus, invagination is an important process in embryology, which plays an important role in the formation of organs and tissues. It can also be associated with various pathologies and diseases, so understanding this process is important for medical practice.

Intussusception (from invaginatus - rolled up, wrapped; from Latin vagina - vagina) - in vertebrates, the rudimentary state of the embryonic anlage in the embryonic development of the germinal tract.

Invagination is also referred to as gastrulation: the process of formation of a gastrula from coelomites inside the primary coelomium with the participation of the blastoderm layer (epiboly). In the coelomic cavity, germ cells and whole embryos (primary blastemas) are found, which, under the influence of ruptures of the membranes, penetrate into the coelomic cavity and move to its periphery, overgrowing on the outside with areas of coelomic epithelium (arborient arborization). Thus, a gastrula appears - a two-layer embryo. Atony of the primary streak during migration, alignment of the external-internal arrangement of parts and the formation of internal “funnel-shaped” pockets between all parts of the blasterma leads to the development of syncytial outgrowths of the blastema, which serve as the beginning of the splitting of the primary blaster into two syncytia. The cells of the blasterme and the cavity lie on different plates of blastermal origin. During the process of decomposition of the integrity of embryonic primary coelomitis, one can notice that the layers of blastermas move in concert