Oligodendrocytes are a type of glial cell in the central nervous system (CNS) responsible for the formation of myelin, a protective sheath that insulates neuronal axons and enhances the speed of electrical signal transmission. They support and maintain neuronal health by providing metabolic support and regulating the environment around neurons. Each oligodendrocyte can myelinate multiple axons, playing a crucial role in the efficient functioning of the nervous system. Dysfunction or damage to oligodendrocytes is associated with various neurological disorders, including multiple sclerosis.