midbrain tegmentum

Ventral part of the midbrain, separated from the hindbrain by the isthmus[ISBN:0471888893]. Subdivision of the midbrain lying anterior to the tectum and posterior to the substantia nigra and cerebral peduncle[FMA] The part of the midbrain extending from the substantia nigra to the cerebral aqueduct in a horizontal section of the midbrain. It forms the floor of the midbrain that surrounds the cerebral aqueduct[WP]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the midbrain tegmentum is

Ventral part of the midbrain, separated from the hindbrain by the isthmus[ISBN:0471888893]. Subdivision of the midbrain lying anterior to the tectum and posterior to the substantia nigra and cerebral peduncle[FMA] The part of the midbrain extending from the substantia nigra to the cerebral aqueduct in a horizontal section of the midbrain. It forms the floor of the midbrain that surrounds the cerebral aqueduct[WP]. The atlas records it as a nerve at the organ scale in the human body.

Where the midbrain tegmentum 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 midbrain tegmentum connects to

The atlas records 39 typed relationships for it, across 4 kinds of connection. part of brainstem, midbrain and cerebral peduncle.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the midbrain tegmentum. 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 MTg, tegmentum, tegmentum mesencephali, tegmentum of midbrain, mesencephalic tegmentum and tegmentum mesencephalicum. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001943, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: brainstem, midbrain and cerebral peduncle.
• A kind of: regional part of brain.
• contains: central gray substance of midbrain, central tegmental tract of midbrain, decussation of superior cerebellar peduncle, dentatothalamic tract, dorsal longitudinal fasciculus of midbrain and dorsal tegmental decussation, and 25 more.
• overlaps: central tegmental tract, laterodorsal tegmental nucleus, nucleus of midbrain tegmentum and peripeduncular nucleus.

Questions

Where is the midbrain tegmentum?

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 midbrain tegmentum connect to?

Part of: brainstem, midbrain and cerebral peduncle.

Is the midbrain tegmentum 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.