myeliinipeitetyillä
Myeliinipeitetyillä refers to structures or tissues that are covered or insulated by myelin. Myelin is a fatty, insulating substance that is produced by glial cells in the nervous system. In the peripheral nervous system, Schwann cells produce myelin, while in the central nervous system, oligodendrocytes are responsible. This myelin sheath wraps around nerve fibers, also known as axons, in a segmented manner.
The primary function of the myelin sheath is to speed up the transmission of nerve impulses. The
Conditions that affect the myelin sheath, such as multiple sclerosis, lead to the demyelination or loss of