Hair Cells External

External Hair Cells: Features and Role in the Body

External hair cells (pilosae externae, lnh) are an important component of the skin and perform a number of important functions. They are located in the outer layer of skin known as the epidermis and play a key role in maintaining the integrity and health of this organ.

Features of outer hair cells:

1. Location: Outer hair cells form the outer layer of the epidermis, which is the primary barrier structure of the skin. They are located near the hair roots and cover the surface of the skin, protecting it from external factors such as injury, infection and ultraviolet radiation.

2. Keratinization: Outer hair cells undergo a process of keratinization, as a result of which they become dense, flat and lack a nucleus. This allows them to provide strength and protection to the skin.

3. Keratin production: One of the important functions of outer hair cells is the production of keratin - a strong protein that forms the main component of hair, nails and the outer layer of skin. Keratin gives the skin firmness and elasticity, and also helps protect it from mechanical damage.

4. Protection against infections: Outer hair cells play an important role in protecting the body from infections. They form a dense barrier on the surface of the skin that prevents microorganisms and other harmful substances from entering the body.

5. Body temperature regulation: Outer hair cells also help regulate body temperature. They help retain heat by creating a layer of air between the hairs, which helps insulate the skin from the cold. In addition, when the ambient temperature rises, they may shrink, allowing heat to escape from the body through the surface of the skin.

6. Participation in inflammatory processes: External hair cells can participate in inflammatory processes, responding to various irritants and infections. They can become activated and release inflammatory mediators, such as cytokines, to attract immune cells and fight off infectious agents.

In conclusion, outer hair cells play an important role in maintaining skin health and function. They provide protection against external factors, participate in keratinization and keratin production, protect the body from infections, regulate body temperature and participate in inflammatory processes. Their functions work synergistically together to provide the skin with the protection it needs and maintain its health.

Despite their invisibility, outer hair cells are an important component of our body. Understanding their roles and functions allows us to better understand the skin and its protective mechanisms. Further research in this area may lead to the development of new treatments for skin diseases and improved skin care.

In general, outer hair cells play an important role in maintaining the integrity and function of the skin. Their protective, regulating and inflammatory functions help keep the skin healthy and protected from external influences.