<Tr> <Th> FMA </Th> <Td> 67242 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> <P> Grey matter (or gray matter) is a major component of the central nervous system, consisting of neuronal cell bodies, neuropil (dendrites and myelinated as well as unmyelinated axons), glial cells (astrocytes and oligodendrocytes), synapses, and capillaries . Grey matter is distinguished from white matter, in that it contains numerous cell bodies and relatively few myelinated axons, while white matter contains relatively few cell bodies and is composed chiefly of long - range myelinated axon tracts . The colour difference arises mainly from the whiteness of myelin . In living tissue, grey matter actually has a very light grey colour with yellowish or pinkish hues, which come from capillary blood vessels and neuronal cell bodies . </P> <P> Grey matter refers to unmyelinated neurons and other cells of the central nervous system . It is present in the brain, brainstem and cerebellum, and present throughout the spinal cord . </P>

White matter and grey matter in spinal cord