Neuroglia Apr 2026

: These cells produce myelin , a fatty sheath that wraps around axons to speed up electrical signals.

: 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. neuroglia

: These line the brain's ventricles and help produce and circulate cerebrospinal fluid (CSF) using hair-like cilia. Peripheral Nervous System (PNS) : These cells produce myelin , a fatty