subcommissural organ in dogs

The subcommissural organ is a circumventricular organ consisting of ependymal and hypendymal cells which secrete SCO-spondin[WP,partially vetted]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the subcommissural organ is

The subcommissural organ is a circumventricular organ consisting of ependymal and hypendymal cells which secrete SCO-spondin[WP,partially vetted]. The atlas records it as a gland at the organ scale in the dog.

Where the subcommissural organ is

It sits within the nervous and endocrine systems. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What the subcommissural organ connects to

The atlas records 4 typed relationships for it, across 2 kinds of connection. part of central nervous system and midbrain tectum.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the subcommissural organ. 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 SCO, cerebral aqueduct subcommissural organ, corpus subcommissurale, dorsal subcommissural organ and organum subcommissurale. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002139, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: central nervous system and midbrain tectum.
• A kind of: acellular anatomical structure and secretory circumventricular organ.

Questions

Where is the subcommissural organ?

It sits within the nervous and endocrine systems. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What does the subcommissural organ connect to?

Part of: central nervous system and midbrain tectum.

Is the subcommissural organ the same in other species?

This page describes the dog. The human record of the same structure sits beside it on /compare, over one shared model rather than two atlases built separately.