prechordal plate in dogs
A horseshoe-shaped thickening of the endoderm at the cranial (rostral) end of the primitive streak formed by the involution of Spemann's organizer cells which, together with the notochord, induces the formation of the neural plate from the overlying ectodermal cells and contributes mesodermal type cells to the surrounding tissue. Every claim on this page comes from the Leumas anatomy graph and carries its source.
What the prechordal plate is
A horseshoe-shaped thickening of the endoderm at the cranial (rostral) end of the primitive streak formed by the involution of Spemann's organizer cells which, together with the notochord, induces the formation of the neural plate from the overlying ectodermal cells and contributes mesodermal type cells to the surrounding tissue. The atlas records it as a region at the region scale in the dog.
Where the prechordal plate is
This dataset records no region or system for it. No positional evidence of any kind. Drawn outside the body so it can still be found and counted, never inside it.
What the prechordal plate connects to
The atlas records 3 typed relationships for it, across 3 kinds of connection. part of axial mesoderm.
Supply and innervation
This dataset asserts no arterial supply, venous drainage or innervation for the prechordal plate. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded ā not that there is nothing to record.
Also called
Also recorded as head mesenchyme and head mesoderm. Searching any of those names reaches this page.
Source
Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0003063, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.
- Part of: axial mesoderm.
- A kind of: embryonic structure.
- develops into: head mesenchyme from mesoderm.
Questions
Where is the prechordal plate?
This dataset records no region or system for it. No positional evidence of any kind. Drawn outside the body so it can still be found and counted, never inside it.
What does the prechordal plate connect to?
Part of: axial mesoderm.
Is the prechordal plate 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.