white matter

Neural tissue consisting of myelinated axons connecting grey matter areas of the central nervous system. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the white matter is

Neural tissue consisting of myelinated axons connecting grey matter areas of the central nervous system. The atlas records it as a nerve at the organ scale in the human body.

Where the white matter is

It sits within the nervous system. Only the system is known. The position shown carries almost no spatial information.

What the white matter connects to

The atlas records 38 typed relationships for it, across 5 kinds of connection. part of central nervous system and lamina of septum pellucidum.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the white matter. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as CNS tract/commissure, neuronal white matter, white matter of neuraxis, white substance, CNS tracts and commissures and CNS white matter, and 2 more. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002316, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: central nervous system and lamina of septum pellucidum.
• A kind of: central nervous system cell part cluster.
• contains: anterior spinocerebellar tract, body of fornix, brachium of inferior colliculus, corticobulbar tract, corticospinal tract and fasciculus of brain, and 16 more.
• subtype: amiculum, brainstem white matter, cingulum of brain, peduncle of neuraxis, stria of neuraxis and white matter of cerebellum, and 5 more.
• composed of: myelinated nerve fiber and central nervous system white matter layer.

Questions

Where is the white matter?

It sits within the nervous system. Only the system is known. The position shown carries almost no spatial information.

What does the white matter connect to?

Part of: central nervous system and lamina of septum pellucidum.

Is the white matter the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.