membranous labyrinth
Enable an agent to identify a membranous labyrinth, record its compartment-specific structural and functional state, and determine what further observation or specialist assessment is justified.
Bundle → Layer → Finding → Questions Filled
5 bundles · 9 layers · 14 findings · 22 questions
Labyrinth identity and boundaries Establish which anatomical system, ear and species the record concerns.
Anatomical instance
Locate the modeled labyrinth within an organism or specimen.
Bearer, side and stage
Require species, laterality and developmental context before applying the provisional human reference anatomy.
- Which organism or specimen and which ear does this labyrinth belong to? provenance
- Which species and developmental stage determine the expected component arrangement? definition
Membranous system extent
Separate the membranous system from its enclosing spaces and individual parts.
Whole versus compartment
The cochlear duct, utricle, saccule and semicircular ducts are constituent sacs and tubules of the membranous system. [NLM MeSH: Inner Ear](https://www.ncbi.nlm.nih.gov/mesh/68007758)
- Does the evidence describe the complete labyrinth, its vestibular portion or one named component? boundary
- Which visible boundaries identify membranous tissue rather than the surrounding bony cavity? definition
Sacs, ducts and communications Represent component geometry and the passages connecting compartments.
Component geometry
Record the shape and extent of each identifiable sac, duct and ampulla.
Localized component inventory
Record each expected component separately, distinguishing absence, altered morphology and failure to visualize it.
- Which cochlear, otolithic and semicircular components are directly identifiable? definition
- What dimensions were measured for each component, using which landmarks and spatial resolution? measurement
Connecting passages
Represent communications through narrow ducts and the extent of the endolymphatic apparatus.
Saccular and endolymphatic connections
Use the ductus reuniens connection between saccule and cochlear duct, and the utriculosaccular connection associated with the endolymphatic duct, as reference relationships to verify. [NLM MeSH: Saccule and Utricle](https://www.ncbi.nlm.nih.gov/mesh/68012444)
- Which named communications are directly demonstrated and which are inferred from reference anatomy? provenance
- How far are the endolymphatic duct and sac represented, including portions beyond the main labyrinthine cavities? boundary
Endolymph and membranous integrity Record the enclosed fluid compartment, its separation from adjacent spaces and changes in its extent.
Fluid compartment separation
Identify which observations concern endolymph and which concern surrounding fluid spaces.
Endolymphatic lumen identification
Distinguish the endolymphatic cochlear duct from the perilymphatic scala vestibuli and scala tympani. [Anatomical imaging study](https://www.ajnr.org/content/ajnr/early/2008/04/03/ajnr.A1036.full.pdf)
- What anatomical or acquisition evidence identifies the observed lumen as endolymphatic? definition
- Which membranes separate it from adjacent spaces, and is their continuity actually resolved? boundary
Distension and disruption
Describe changes to lumen extent and wall integrity without collapsing them into a diagnostic label.
Compartment state with method
Record suspected distension, collapse or disruption by site, observation method and uncertainty; distinguish observed morphology from proposed mechanism.
- Which compartment appears altered, and what explicit measurement or grading criterion supports that assessment? measurement
- Could acquisition, segmentation or specimen preparation account for the apparent alteration? provenance
Sensory sites and functional interpretation Connect localized sensory tissue observations with auditory and vestibular evidence.
Sensory tissue localization
Locate cochlear and vestibular receptor regions within their parent compartments.
Receptor site condition
Organize observations by the organ of Corti, utricular and saccular maculae, and ampullary cristae; mark tissue condition unknown when the method cannot resolve it.
- Which named sensory region is being assessed, and in which membranous compartment? definition
- What direct evidence supports preservation, loss or disorganization of that sensory tissue? provenance
Functional evidence and next observation
Interpret linked tests within their anatomical localization limits.
Structure-function attribution
Require an explicit justification for attributing a test result to a membranous compartment, and record unresolved contributions from nerves or central pathways.
- Which compartment does the linked auditory or vestibular result support assessing, and what other structures could explain it? boundary
- What additional observation or specialist interpretation would resolve the remaining localization uncertainty? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these check these first hold for the sense of membranous labyrinth this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these identifiers and schemes hold for the sense of membranous labyrinth this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these standards and regulation hold for the sense of membranous labyrinth this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these real-world use hold for the sense of membranous labyrinth this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these failure modes and hazards hold for the sense of membranous labyrinth this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of membranous labyrinth this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.LIV
- Other names and narrower kinds
- membranous labyrinth of right internal ear, membranous labyrinth of left internal ear
What it is Filled
The membranous labyrinth is the interconnected system of endolymph-filled epithelial sacs and ducts within the bony labyrinth of the inner ear, containing the sensory epithelia for hearing and balance.
In scope
- Cochlear duct, utricle, saccule, semicircular ducts and their ampullae
- Connecting passages, endolymphatic duct and endolymphatic sac
- Membranous walls, enclosed endolymph and interfaces with surrounding tissues
- Location and condition of cochlear and vestibular sensory epithelia
- Compartment-specific morphology, continuity and evidence of functional impairment
Out of scope
- Bony labyrinth and temporal bone as independently modeled structures
- External and middle ear sound-conduction apparatus
- Vestibulocochlear nerve beyond its peripheral sensory interfaces
- Central auditory and vestibular pathways
- Whole-person diagnoses and treatment protocols
- Organism taxonomy, population ecology and conservation status
Why it exists Filled
Enable an agent to identify a membranous labyrinth, record its compartment-specific structural and functional state, and determine what further observation or specialist assessment is justified.
Distinguishing features Filled
- Identify epithelial and connective-tissue sacs and ducts rather than the surrounding osseous cavities. [NLM MeSH: Inner Ear](https://www.ncbi.nlm.nih.gov/mesh/68007758)
- Require an endolymph-containing compartment; adjacent perilymphatic spaces do not themselves constitute the membranous labyrinth. [Anatomical imaging study](https://www.ajnr.org/content/ajnr/early/2008/04/03/ajnr.A1036.full.pdf)
- Distinguish the whole system from a single constituent: a cochlear duct, utricle or semicircular duct is a component, not a synonym for the complete labyrinth.
- Distinguish the vestibular portion from the complete membranous labyrinth, which also includes the cochlear duct.
- Treat the labyrinth as an anatomical part of an organism, not as an organism, taxon or disease.
What robots and AI may and may not do Filled
Must not
- Diagnose inner ear disease from reported symptoms.
- Recommend medicines, injections or surgery for a specific person.
- Dismiss vertigo or tinnitus as imagined.
- Disclose a person's hearing or balance records without consent.
Only with a human decision
- Any treatment decision for inner ear disease.
May
- Explain the structure and function of the membranous labyrinth in general terms.
- Advise a person with sudden hearing loss or severe vertigo to seek prompt care.
Moral aspects Filled
- Hearing and balance loss affect independence, safety and communication.
- Deaf and hard of hearing people deserve respect and accessible communication.
Who is affected
- People with hearing or balance disorders
- Deaf communities
- Families
Owners Filled
Steward
Nobody owns it; it is part of each person's body.
Links to other meta-models Filled
parent
- Q112826975 - registry parent class
- Q66545296 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.membranous-labyrinth
- Wikidata: Q6593307 (https://www.wikidata.org/wiki/Q6593307)
Direct properties required Filled
- Anatomical bearer and side: Organism or specimen identifier; left, right or unresolved
- Species and developmental context: Species identifier; developmental stage; reference anatomy used
- Component inventory: For each named component: present, absent, altered, not visualized or unassessed
- Communication topology: Named compartments connected through named passages; continuity observed, inferred, disrupted or unknown
- Compartment dimensions: Length or diameter in mm; area in mm²; volume in mm³; compartment, method and uncertainty required
- Membranous boundary integrity: Intact, disrupted, collapsed, indeterminate or unassessed; location and evidence required
- Endolymphatic distension: Absent, suspected, demonstrated or unassessed; compartment and assessment criteria required
- Sensory epithelium condition: Site-specific preservation, loss, disorganization, indeterminate or unassessed
- Associated functional evidence: Linked auditory or vestibular test record with side, date, result and localization limits
Recognition required Filled
- Tiny fluid-filled tubes and sacs inside the bony inner ear, including the cochlear duct and semicircular ducts.
Capabilities and actions required Filled
- Annotate membranous compartments and sensory sites in a specimen or anatomical image.
- Map observed connections and flag missing or unresolved passages.
- Compare compartment measurements using compatible acquisition methods and reference populations.
- Link auditory and vestibular test results to candidate compartments with explicit localization uncertainty.
- Track structural changes in the same ear over time.
- Identify the additional imaging, histology or specialist interpretation needed to resolve a specific uncertainty.
Hazards and failure modes required Filled
- Excess fluid pressure can cause attacks of vertigo, tinnitus and hearing loss.
- Loud noise and some medicines can damage its sensory cells permanently.
Standards and interfaces required Filled
- Terminologia Anatomica, issued by the Federative International Programme for Anatomical Terminology under the International Federation of Associations of Anatomists, standardizes anatomical names for the membranous labyrinth and its components.
Context of use required Filled
- The membranous labyrinth is encountered in inner ear anatomy, hearing and balance research, and specialist assessment of auditory or vestibular disorders.
- Its cochlear and vestibular compartments contain sensory structures that convert sound-related movement and head motion into neural signals.
Sources Filled
- Wikidata item Q6593307: membranous labyrinth - identity and sense of the item
- Wikipedia: Membranous labyrinth - general description of the item
Open questions
- Does this registry entry intend human anatomy specifically or a comparative vertebrate concept requiring species-dependent component inventories?
- Does an existing Vercy world model already own the membranous labyrinth concept, requiring a link instead of a separate publication?
- Which authoritative anatomical terminology should govern component names and the precise extent of the endolymphatic duct and sac?
- Which species-, age- and method-specific reference measurements and distension criteria are sufficiently validated for this model?
- How reliably can each proposed imaging or functional method localize abnormalities to individual membranous compartments or sensory epithelia?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q6593307/spec.json