otolith organ

The crystalline particles composed of calcium carbonate and a protein which adhere to the gelatinous membrane of the maculae of the utricle and saccule (otolithic membrane). Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the otolith organ is

The crystalline particles composed of calcium carbonate and a protein which adhere to the gelatinous membrane of the maculae of the utricle and saccule (otolithic membrane). The atlas records it as a organ at the organ scale in the human body.

Where the otolith organ is

It sits in the head, within the nervous and sensory systems. 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 otolith organ connects to

The atlas records 9 typed relationships for it, across 6 kinds of connection. part of somatic nervous system, vestibular labyrinth and vestibular system.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the otolith organ. 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 otolith organs, saccule and utricle and utricle and saccule. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002518, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: somatic nervous system, vestibular labyrinth and vestibular system.
• A kind of: organ.
• subtype: saccule of membranous labyrinth and utricle of membranous labyrinth.
• Develops from: ear vesicle.
• bounding layer of: statoconial membrane.
• contains: statoconial membrane.

Questions

Where is the otolith organ?

It sits in the head, within the nervous and sensory systems. 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 otolith organ connect to?

Part of: somatic nervous system, vestibular labyrinth and vestibular system.

Is the otolith organ 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.