Which term describes the outer brain layer that contains neuronal cell bodies?

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Grey matter is the outer brain layer that contains neuronal cell bodies, along with dendrites and unmyelinated fibers. This tissue is where most of the brain’s processing and integration occur, which is why its darker, non-myelinated appearance stands out. White matter, on the other hand, is mostly myelinated axons that form the brain’s communication networks between regions, giving it a lighter color. The corpus callosum is a major white matter tract connecting the two hemispheres, so it’s part of white matter rather than the layer with neuronal cell bodies. Oligodendrocytes are the glial cells that produce myelin in the central nervous system, supporting white matter. So the description of the outer brain layer containing neuronal cell bodies aligns with grey matter.