Why is white and grey rey? white matter matter
The part between our ears comes in two shades: white and grey. The difference between the two is all in the fat content.
Grey Matter White Matter The white matter of the brain is made up primarily of axon tracts, the long, spindly appendages of some brain cells.
These tracts transmit the electrical signals which neurons, use to communicate.
White Matter In contrast, gray matter is mostly neuron cell bodies and non-neuron brain cells called Gray Matter glial cells,
GLIAL CELLS Oligodendrocytes Microglia Because these cells are not surrounded by white myelin, they take on the natural grayish color of the neurons and glial cells. Ependymal cells0 Astrocytes Schwann cells
The spinal cord, which transmits nerve impulses to and from the rest of the body, has the opposite arrangement: gray matter at its core with insulating white matter on the outside