: Surround neuron cell bodies in ganglia to provide physical support and regulate their chemical environment.
: Function similarly to oligodendrocytes by forming myelin sheaths around axons in the PNS, but also aid in nerve regeneration. neuroglia
Neuroglia are categorized by their location in either the Central Nervous System (CNS) or the Peripheral Nervous System (PNS). Central Nervous System (CNS) : Surround neuron cell bodies in ganglia to
: 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. Central Nervous System (CNS) : The most abundant
: These cells produce myelin , a fatty sheath that wraps around axons to speed up electrical signals.
: These line the brain's ventricles and help produce and circulate cerebrospinal fluid (CSF) using hair-like cilia. Peripheral Nervous System (PNS)
: The brain’s resident immune cells. They act as macrophages, scavenging for dead cells, debris, and pathogens.
