Peyer's patches, Lymphoid patches (Peyer S Patches)

Peyer's patches, Lymphoid patches (Peyer S Patches) are oval nodular accumulations of lymphoid tissue located in the thickness of the mucous membrane and in the submucosa of the small intestine. These lymphoid formations play an important role in the intestinal immune system, participating in the development of an immune response to antigens entering the body through the digestive tract. Peyer's patches contain B lymphocytes, T lymphocytes, macrophages and other immunocompetent cells. Upon contact with antigens, lymphocytes are activated and an immune reaction develops in this area of ​​the intestine. Thus, Peyer's patches are an important part of the local immunity of the small intestine.

Peyer's patches

One of the features of the intestinal structure is the presence of Macrophage cells that accept any possible microorganism and have processes. These cells are part of nonspecific immunity and are triggered first when the immune system cannot resist infection in the intestines. Oval nodules on the intestinal mucosa are Peyer's patches. They are classified as elements of differentiated digestion in the sense that the function of these specific structures is to participate in the breakdown of foreign agents.

They cover the inner layer of the small intestine and form 40–50% of its mass, covering most of the intestinal lumen. The functions of lymphoids, mucous epithelium without cartilage, the intestinal wall and intestines of the brain are called subepithelial type formations. Structurally, such lymphoid foci form layers. Together with submucosal follicles, a Peyers patch is formed. Pyloric folds pass between these elements. They allow food to move from the place where digestive juices begin to be produced to the place where feces are formed and back. These plaques are involved in the process of hydrolysis of exogenous food components. Lymphoid plaque (lymphoplaque) Lymphoplaques are focal accumulations of mature central lymphocytes of various sizes. They belong to the organs of the immune system. Anatomically closely related to lymphoid follicles, due to the presence of common outer mesenchymal cells. The length of lymph plaques is

Pierre Patel's patches are clusters of pseudolymphoid cells in the intestinal walls of humans and animals that help the immune system fight infectious diseases. They were named after the German pathologist Pierre Pierre, who first described them in 1879. Plaques were first discovered in rats and are now known to occur in many animal species and humans.

Anatomically, Pierre's plaques are formations with a diameter of several millimeters to several centimeters. They are usually located in different places in the cecum. There are subepithelial plaques (located on the inner surface of the intestinal wall), intra

In this article we will look at Peyer's patches and lymphoid plaques. what these places are and what diseases may be associated with them.

Plaques (or in the medical literature reuser s patches) are peculiar lymphoid accumulations located in the stomach or twelve