What is white matter?
The white matter is called the white matter. Gray's Anatomy (1918) describes it as the nervous tissue made mostly of myelinated nerve fibers.
What it is
- The nervous tissue made mostly of myelinated nerve fibers.
- Its color comes from the fatty myelin sheath around the fibers.
- Carries signals between different regions of gray matter.
Where it is
- Lies deep to the gray matter of the cerebrum and cerebellum.
- Forms the outer part of the spinal cord.
- Bundled into tracts and commissures.
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Last verified: 2026-07-18
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