substantia innominata in dogs

A predominantly gray matter structure of the basal telencephalon defined on the basis of Nissl stain. Caudal to the anterior commissure it lies deep to the globus pallidus and dorsal to the amygdala. Rostral to the anterior commissure it lies deep to the striatum. The more rostral portion contains the basal forebrain nucleus ( Anthoney-1994 ). In the late twentieth century the region containing the substantia innominata was resegmented on the basis of neurochemistry and connectivity to constitute the striatopallidal system ( Heimer-1995 ). In this scheme the caudal portion of substantia innominata is located largely in the ventral pallidum and the rostral portion in the ventral striatum. (from Brain Info). Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the substantia innominata is

A predominantly gray matter structure of the basal telencephalon defined on the basis of Nissl stain. Caudal to the anterior commissure it lies deep to the globus pallidus and dorsal to the amygdala. Rostral to the anterior commissure it lies deep to the striatum. The more rostral portion contains the basal forebrain nucleus ( Anthoney-1994 ). In the late twentieth century the region containing the substantia innominata was resegmented on the basis of neurochemistry and connectivity to constitute the striatopallidal system ( Heimer-1995 ). In this scheme the caudal portion of substantia innominata is located largely in the ventral pallidum and the rostral portion in the ventral striatum. (from Brain Info). The atlas records it as a nerve at the organ scale in the dog.

Where the substantia innominata 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 substantia innominata connects to

The atlas records 6 typed relationships for it, across 2 kinds of connection. part of basal forebrain, globus pallidus and telencephalon.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the substantia innominata. 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 innominate substance, nucleus of substantia innominata, substantia innominata (Reil, Reichert), substantia innominata of Meynert, substantia innominata of Reichert and substantia innominata of Reil, and 1 more. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0003017, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: basal forebrain, globus pallidus and telencephalon.
• A kind of: cerebral hemisphere gray matter, nucleus of brain and pallidum.

Questions

Where is the substantia innominata?

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 substantia innominata connect to?

Part of: basal forebrain, globus pallidus and telencephalon.

Is the substantia innominata 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.