Epithelium

The epithelium is a layer of cells that covers the surface of the body and protects it from external influences. It is made up of different types of cells that perform different functions.

The epithelium can be flat, cuboidal, columnar or ciliated. Each type of epithelium has its own characteristics and functions. For example, squamous epithelium covers the mucous membranes of the stomach, intestines, respiratory tract and bladder. Cuboidal epithelium forms the skin and mucous membrane of internal organs. Columnar epithelium is found in the kidneys, liver and lungs.

In addition, the epithelium can have different thickness and structure depending on its location. For example, on the skin it is thin and smooth, but in the lungs it is thick and loose.

One of the main functions of the epithelium is to protect the body from infections and other harmful influences. In addition, it is involved in metabolism, the secretion of sweat and sebaceous glands, as well as the formation of hormones.

However, the epithelium performs not only protective functions. It is also involved in the processes of digestion, respiration, excretion and reproduction.

Epithelium is a term that refers to the various types of tissue present in the human body. One of the main functions of epithelial tissue is to protect the internal organs and systems of the body from damage and exposure to external factors.

Epithelial tissue consists of cells that are located on the surface and protect internal organs from weather and damage. This tissue covers many organs, including the skin, mucous membranes, vascular wall and others. It also forms the surface layer of the lungs, kidneys, liver and other organs.