What is the intestinal epithelium?
intestinal epithelium is a cell tissue that lines large and small intestine. It serves primarily to participate in the digestive process, but also participates in the function of the immune system. The epithelium of the intestine is a simple column and is unrestrained.
The epithelium is tissue that consists of different types of cells. It covers the surface of the body and organs as well as the internal lining of body cavities and hollow organs. The entire epithelium has an exposed surface, called a free surface or an apical surface, and is connected to the connective tissue on its underside by a thin layer called the basement membrane. Epithelial cells are easy to divide, so tissue injuries will recover quickly. Intestinal epithelial cells are constantly damaged and then replaced.
There are many different classifications of epithelial cells. The intestinal epithelium is primarily formed by a simple column epithelium. This type of tissue is the only layer of cells that are extended and resemble columns. The cores of these cells are usually at the same level as the basement membrane. Cilia are the expansion of cells and in they they move. The intestinal epithelium is uninvited.
The main functions of a simple column epithelium are absorption, secretion and protection. Simple column cells secrete digestive fluids and absorb nutrients. These cells are also longer, and therefore tissue is stronger, which protects it.
simple column epithelial cells are particularly specialized in absorption because they have thousands of small projections in the shape of a cylinder called microvilli. These microvilli increase the surface surface of the cell membrane where the cells are exposed, and allow greater exposure to any substance are absorbed. In the case of the intestinal epithelium, it is most important in the small intestine, because there is most of the digestive process. These cell types are called Border Border cells.
absorbing the remaining water in fissioned food and the excretion of the remaining waste is the primary responsibility of the large intestine. His intestinal epithelium is not so complex oro varied as thin intestines. However, the small and large intestine have cells called the toll receptor 4 (TR4) cells that contribute to the immune system by recognizing pathogens and creating a barrier to stop them.
intestinal epithelium also contains cup cells. They are shaped as a flask and are dispersed between other cells. These cells secrete mucus, protective fluid, on the free surface of epithelial tissue.