Definition The epithelium is one of the four basic tissues of the body and is also called the covering tissue. Almost all body surfaces are covered by epithelium. These include both external surfaces, such as the skin, and the internal surfaces of hollow organs, such as the bladder. The epithelium is an extensive group of … Epithelium
Epithelium of the eye The stomach is internally lined by the gastric mucosa, the innermost layer of which forms a single-layered, highly prismatic epithelium. This means that the epithelial cells have an elongated shape. The individual cells are connected to each other by special connections, so-called tight junctions. The epithelium and the adjacent layers form … Epithelium of the eye | Epithelium
Epithelium of the skin The skin (epidermis) is separated from the outside by a multi-layered cornified squamous epithelium. This provides mechanical protection, prevents the penetration of bacteria and prevents the body from drying out. It is called squamous epithelium because the uppermost cell layer consists of flat cells. Since these cells die constantly, turn into … Epithelium of the skin | Epithelium
Carcinomas Carcinomas, i.e. malignant tumors, can also develop in epithelia. Here there are different types, which arise from different types of epithelium. They must be distinguished from the so-called adenomas, which are benign tumors of glands of the epithelium. Papillomas are also benign epithelial growths.A carcinoma can develop from squamous epithelium, then one speaks of … Carcinomas | Epithelium
