corticospinal tract

The corticospinal fibers that arise from the pyramidal cells within the cerebral cortex layer V of the precentral motor area, the premotor area and the postcentral gyrus, then descend into and through the medulla to form the lateral corticospinal tract and the anterior corticospinal tract. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the corticospinal tract is

The corticospinal fibers that arise from the pyramidal cells within the cerebral cortex layer V of the precentral motor area, the premotor area and the postcentral gyrus, then descend into and through the medulla to form the lateral corticospinal tract and the anterior corticospinal tract. The atlas records it as a nerve at the organ scale in the human body.

Where the corticospinal tract is

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

What the corticospinal tract connects to

The atlas records 7 typed relationships for it, across 3 kinds of connection. part of nervous system and white matter.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the corticospinal tract. 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 pyramidal tract, corticospinal fibers, fasciculus cerebro-spinalis, fasciculus pyramidalis, fibrae corticospinales and pyramid (Willis), and 3 more. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002707, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: nervous system and white matter.
• A kind of: axon tract and organ system subdivision.
• contains: lateral corticospinal tract, pyramidal decussation and ventral corticospinal tract.

Questions

Where is the corticospinal tract?

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

What does the corticospinal tract connect to?

Part of: nervous system and white matter.

Is the corticospinal tract 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.