lamina of spiral limbus

The osseous spiral lamina consists of two plates of bone, and between these are the canals for the transmission of the filaments of the acoustic nerve. On the upper plate of that part of the lamina which is outside the vestibular membrane, the periosteum is thickened to form the limbus spiralis (or limbus laminæ spiralis), this ends externally in a concavity, the sulcus spiralis internus, which represents, on section, the form of the letter C. [WP,unvetted]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the lamina of spiral limbus is

The osseous spiral lamina consists of two plates of bone, and between these are the canals for the transmission of the filaments of the acoustic nerve. On the upper plate of that part of the lamina which is outside the vestibular membrane, the periosteum is thickened to form the limbus spiralis (or limbus laminæ spiralis), this ends externally in a concavity, the sulcus spiralis internus, which represents, on section, the form of the letter C. [WP,unvetted]. The atlas records it as a organ at the organ scale in the human body.

Where the lamina of spiral limbus is

It sits in the head, within the sensory 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 lamina of spiral limbus connects to

The atlas records 3 typed relationships for it, across 3 kinds of connection. part of cochlear duct of membranous labyrinth.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the lamina of spiral limbus. 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 limbus lamina spiralis, limbus laminae spiralis, limbus laminae spiralis osseae, spiral limbus lamina and spiral limbus. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002276, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

Questions

Where is the lamina of spiral limbus?

It sits in the head, within the sensory 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 lamina of spiral limbus connect to?

Part of: cochlear duct of membranous labyrinth.

Is the lamina of spiral limbus 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.