fornix of brain

A C-shaped bundle of fibres (axons) in the brain, and carries signals from the hippocampus to the mammillary bodies and septal nuclei. It is typically divided into the columns (crus), body, commissure and the pre-commissural and post-commissural fornix (MM). Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the fornix of brain is

A C-shaped bundle of fibres (axons) in the brain, and carries signals from the hippocampus to the mammillary bodies and septal nuclei. It is typically divided into the columns (crus), body, commissure and the pre-commissural and post-commissural fornix (MM). The atlas records it as a nerve at the organ scale in the human body.

Where the fornix of brain is

It sits within the nervous system. Positioned deliberately as part of this species body plan.

What the fornix of brain connects to

The atlas records 8 typed relationships for it, across 3 kinds of connection. part of hippocampal formation.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the fornix of brain. 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 fornix, brain fornix, cerebral fornix, forebrain fornix, fornix of neuraxis and neuraxis fornix, 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:0000052, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: hippocampal formation.
• A kind of: tract of brain.
• contains: anterior column of fornix, body of fornix, hippocampus fimbria, postcommissural fornix of brain, posterior column of fornix and precommissural fornix of forebrain.

Questions

Where is the fornix of brain?

It sits within the nervous system. Positioned deliberately as part of this species body plan.

What does the fornix of brain connect to?

Part of: hippocampal formation.

Is the fornix of brain 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.