Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Glial cells, also known as neuroglia, are non-neuronal cells in the central nervous system and peripheral nervous system that support and protect neurons.
Related terms
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.