the.com/glia
The brain's overqualified support staff that neuroscience spent a century mistaking for filler.
means The non-neuron cells of the nervous system that feed, insulate, defend, and help neurons fire.
from From Greek glia, meaning glue, because early anatomists assumed they merely held neurons together like cellular caulk.
Wrong ratioOld textbooks claimed ten-to-one over neurons; actually roughly equal.
Memory roleAstrocytes actively shape synapses, not just nurse them.
Myelin makersOligodendrocytes wrap nerves for faster signal speed.
Brain janitorsMicroglia patrol, prune, and devour cellular debris.