Astrocytes: These are star-shaped glial cells in the brain and spinal cord that help form blood-brain barriers and regulate tissue repair.
Microglia: These are a type of glial cell located throughout the brain and spinal cord that act as first responders to damaged neurons or pathogens.
Oligodendrocytes: These are a type of glial cell in the central nervous system that produce myelin sheath around neuronal axons which helps speed up electrical impulses.