CNS= central nervous system.
PNS= Peripheral nervous system.
Hello everyone, before talking about the CNS, I would like to talk about the basics of peripheral nerve fibers' protection for axons. As you can see, there is a type of cell called schwann cells protecting both unmyelinated and myelinated peripheral nerve fibers' axons as the picture below show
Yes. But what about in the CNS, I read a lot of documents about the CNS but there no mention of how unmyelinated axons in the CNS are protected. I only know so far that oligodendrocyte form myelin sheath for protecting and conducting nerve impulse. But no documents mention any thing about what protect unmyleinated axons in CNS (central nervous system)
It's a dilemma