What type of glial cell forms myelin in the peripheral nervous system?

In the peripheral nervous system (PNS), Schwann cells are responsible for the formation of myelin, which is a fatty substance that wraps around the axons of neurons. Myelin acts as an insulator, significantly increasing the speed of electrical signal conduction along the axon. Each Schwann cell myelinates a single segment of an axon, and they can also support the regeneration of damaged peripheral nerves by facilitating the regrowth process.

To deepen the understanding of Schwann cells, it's important to note their role in the overall health and function of the nervous system. By insulating axons, they not only enhance signal transmission but also play a crucial part in maintaining the integrity of the axonal environment.

In contrast, astrocytes primarily support neurons in various ways, including providing nutrients and maintaining the blood-brain barrier. Oligodendrocytes, which are similar to Schwann cells but found in the central nervous system (CNS), are responsible for myelinating multiple axons. Microglia serve as the resident immune cells within the CNS and are involved in inflammatory responses and cleaning up debris. Each of these glial cell types has distinct functions that are essential for the overall functioning of the nervous system, but when it comes