Chorial Plate

The chorionic plate is the basis of the wall of the chorion. It consists of connective tissue. The villi of the chorionic plate form the umbilical cord.
The chorionic plate also contains blood vessels. Chorionic villi produce substances that promote fetal development. The chorionic plate together with the villi forms the placenta.

Chorionic plates are elements of the inner lining of the placenta, which are located between the fetal and maternal arteries and form the chorionic surface of the placenta. The chorionic plate participates in gas exchange between the mother and her offspring, and also creates the inner surface of the embryonic membrane, which serves as the site of attachment of the chorionic plate villi and the developing placental tissue.

The chorionic lamellar parenchyma, separating the ventral side of the amnion from the fruiting surface, consists of a basal layer of chorionic lamellar sclerosis producing trophoblasts, basal and intermediate cell layers (mesenchyma) that are part of the connective tissue parenchyma of chorionic lamellar sclerosis, and syncytiotrophoblast cells located in functional dome-shaped cells layers below the basal layer. Syncytial plate chorionic cells develop directly from placentogenic structures and do not give rise to migrating preimplantation proliferations. A distinctive feature of the mucous membrane during IVF is its thickness: from 40 to 50 mm. Variability in thickness divides the wall of the bladder into thickened and thinned; the division is accompanied by various pathologies: the presence of hernias of the umbilical ring and placenta previa with the chorionic disc in any part of it, which is confirmed by the length of the umbilical cord, depending on the location of the chorionic plate.

The formation of homologous villi involves epithelia consisting of two types of structures: trophoblastic epithelial cells, among which syncytio- and cytotrophoblast are distinguished, and large homogeneous epithelium without nuclei, associated with altered decidual cells of the placental area.

Among the syncytium cells, one can distinguish cells with a primordial structure - active precursors of sprouts of trophic function, and apoptotic ones, which are a reserve of the blastoset and rest in the intermediate segment between the bases of the villi. The cells of the middle layer are closely connected with the layers of the vascular stroma of the uterus, due to which the villi perform the trophic function of the placentamprox and system. The structure and structure of the villi does not change in early gestation, sharply demarcating the embryos. They are distinguished by a contractile layer that forms oblique plates, which, with the strong participation of the muscles of the uterus, differentiate between the ends of the folds. The villi are the most mobile organs of the placenta, as they are attached to the maternal arteries through connective tissue, thanks to cellular connections.