What is the function of epithelial tissue?
epithelial tissue, also called epithelium, is one of the four main types of tissues found in animals, including humans. It completely covers or lines, all outer surfaces of the body and almost all the inner surfaces of the body. Several internal organs, such as liver, kidneys and lungs, as well as other internal structures such as some glands, consist mainly of epithelial tissue. The epithelial tissue provides both the environment from the environment for other tissues and organs, but also acts as an interface with the outside world. The epithelial cells are relatively diverse and are responsible for many functions, including protection, secretion, certain types of absorption and some types of sensory inputs.
The most famous type of epithelial tissue is formed by a special type of epithelial cell and is called an epidermis or skin. The epidermis protects other body tissues from damage to the enemy or dangerous environment and provides a protective barrier against any parasites and harmful microorganisms. The epithelial skin tissue is also very universÚal. The sweat glands in this tissue help to regulate the body temperature and the nerve endings in epithelial tissues are part of the sensory system. It also recovers after the suffering of damage, especially the epidermis.
Several characteristics of epithelial tissue differ from other types of tissues. The epithelial tissue forms a neighboring layer where it is found, without gaps, broken or holes. Its cells are very close to each other, each of which is attached to others around it with a small space between them. The cells are arranged so that all cells in the epithelium layer are aligned in the same direction. The epithelial tissue is usually separated from other tissues by the type of membrane called the basement membrane, which consists of the secretory of the epithelial cells themselves.
internally, epithelial tissue some of the same functions as an epidermis or external epithelium lining the surfaces of all body cavities and providing protectivelayer of inner surfaces of the body. Several internal organs and glands are also composed of epithelial tissue, and these organs are primarily involved in the absorption of food, water, air and filtration and waste secretion. A good example of inner epithelial tissue is the lungs that allow oxygen to enter the bloodstream.