: Function similarly to oligodendrocytes by forming myelin sheaths around axons in the PNS, but also aid in nerve regeneration.
: These line the brain's ventricles and help produce and circulate cerebrospinal fluid (CSF) using hair-like cilia. Peripheral Nervous System (PNS) neuroglia
: The most abundant glial cells. They maintain the blood-brain barrier, regulate the chemical environment (like potassium ions), and provide nutrients like lactate to neurons. : Function similarly to oligodendrocytes by forming myelin