habenula

A segment of the epithalamus that has as its parts the habenular nuclei and the habenular commissure[FMA,modified]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the habenula is

A segment of the epithalamus that has as its parts the habenular nuclei and the habenular commissure[FMA,modified]. The atlas records it as a nerve at the organ scale in the human body.

Where the habenula is

It sits within the nervous system. 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 habenula connects to

The atlas records 9 typed relationships for it, across 5 kinds of connection. part of epithalamus.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the habenula. 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 Hb, habenula complex, ganglion intercrurale, ganglion interpedunculare, habenulae and habenular complex, and 4 more. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001904, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: epithalamus.
• A kind of: regional part of brain.
• contains: habenular commissure, habenular nucleus, habenular trigone, lateral habenular nucleus and medial habenular nucleus.
• contributes to morphology of: epithalamus.
• overlaps: stria medullaris.

Questions

Where is the habenula?

It sits within the nervous system. 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 habenula connect to?

Part of: epithalamus.

Is the habenula 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.