What are the holocrine glands?
Holocrine glands are glands that eliminate whole cells that have completely disintegrated for elimination from the body. This is unique because other forms of secretion do not design whole cells. There are only three methods of glandular secretion in the human body: apocrine, mercin and holocrine. Unlike holocrine secretion, secretion of the apocrine glands consist only of cell membranes - not of the entire cell. Merocrine glands secrete a combination of mucus and serum and leave the rest of the cell intact.
The self -gland is the only holocrine glands that exist in the body. They are a type of exocrine gland, which means they use pipes to transport secretions to a specific place outside the body; The "exo" prefix means "outdoors" or "on top". Because the sebaceous glands are placed on the epidermal layer of the skin, they transport secretion directly to the skin surface.
are placed in parallel with hair follicles and are usually among the hair follicles asval of the artist Pili that support follicles, allow them to download and tighten aroundhair. Before secretion, the entire sebaceous gland cells first increase lipids and other moisturizing substances. Then they fall apart, die and radiate to absorb the skin surface.
When the sebaceous glands have disintegrated, they are excreted as a substance called "sebum". This sebum, even if the form of waste, is beneficial because it provides lubrication of hair follicles, reduces hair breaking and gives moisture to dry skin and dry skin throughout the body. In the case of the body coating, the sebum discharged by the holocrine glands, it prevents excessive evaporation of water, thereby stopping dehydration. Mediced sebum can also allow good bacteria to prosper and at the same time serve as a buffer against harmful mushrooms and bacteria that tend to enter the body through a dry, cracked skin. One disadvantage of this secontation from the holocrine glands is that Sebum, because it hides good and bad bacteria, can lead to unpleasant odor if it is not regularly washed.
Holocrine glands consist of small clusters of cells called acini. Inside one acinus is a pipe for secretion surrounded by three different layers of cells. The outer layer of cells, known as blocks cells, is never shed for secretion; Not even the second layer. Only the innermost layer of cells right next to the pipe, known as centroacinar cells, is destroyed for secretion and most acinus leaves intact. New cells are generated to replace the Shell cells.