hyoid bone
Enable an agent to recognise a hyoid bone, record its anatomical and functional state, and determine which observations or specialist assessments are warranted.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to recognise a hyoid bone, record its anatomical and functional state, and determine which observations or specialist assessments are warranted.
The hyoid bone is a small, typically U-shaped bone in the anterior human neck between the mandible and larynx that has no direct bony articulation and provides attachment for muscles involved in tongue movement, swallowing and stabilization of the larynx.
It can be Identify and label the hyoid and its visible components in an anatomical image or specimen.; Measure hyoid geometry using explicit landmarks and documented uncertainty.; Map attachment sites to neighbouring anatomical structures.; Track hyoid position and excursion across a recorded swallowing or other specified task.; Compare suspected structural changes with developmental interfaces, prior observations and acquisition limitations.; Prepare an evidence-linked anatomical description for specialist review..
Distinguishing features
In the human reference anatomy, identify a central body with paired greater and lesser horns rather than a continuous jaw arch bearing teeth.
Locate it below the mandible and above the larynx rather than within the vertebral column.
Distinguish the hyoid from laryngeal cartilage by anatomical position, tissue identification and its body-and-horns configuration.
Check that its suspension involves soft-tissue connections rather than a direct joint with another bone.
For an isolated fragment, require diagnostic landmarks or corroborating context before assigning hyoid identity.
Scope
+ Identification of the hyoid body, greater horns and lesser horns
+ Position and orientation relative to the mandible, tongue base and larynx
+ Connections through muscles, ligaments and membranes
+ Hyoid movement during specified functional tasks
+ Developmental variation, fusion and structural integrity
+ Evidence linking an observation to a particular individual or specimen
- The tongue, larynx and mandible as complete anatomical structures
- The entire swallowing, speech or respiratory system
- Whole-organism taxonomy and life history
- Diagnosis or treatment of swallowing and airway disorders
- Determination of cause or manner of death
- Nonhuman hyoid apparatus components without established correspondence to this structure
Characteristics
- Anatomical reference
- Species, reference terminology and identification confidence Prevents human terminology and expectations from being applied uncritically to another animal.
- Represented entity
- In situ bone, isolated specimen, fragment or image-derived representation Determines which anatomical relationships and physical properties can actually be observed.
- Component configuration
- Body and each horn: identified, incompletely observed, absent or uncertain Separates incomplete evidence from genuine anatomical variation or loss.
- Dimensions and symmetry
- Millimetres and degrees, with landmarks, side and measurement method Supports reproducible description of shape without treating size or asymmetry alone as abnormality.
- Body-greater horn union
- Unfused, partially fused, fused or indeterminate, recorded separately by side Helps distinguish developmental interfaces from suspected discontinuities.
- Attachment relationships
- Named attached structure, attachment site and observed or reference-derived status Explains how the bone is suspended and how forces may act on it.
- Task-dependent position and excursion
- Position and displacement in millimetres; timing in seconds; specified reference frame and task Makes movement observations interpretable across posture, swallowing tasks and acquisition methods.
- Structural integrity
- No discontinuity detected, suspected discontinuity, confirmed discontinuity, remodelling or indeterminate Records what the evidence supports without equating a visible feature with a diagnosis or injury mechanism.
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 5 bundles · 9 layers · 14 findings · 22 questions.
Hyoid identity and parts Establishes what structure is represented and which hyoid components can be recognised.
A small suspended bone or isolated fragment can be misidentified, and species differences can invalidate human anatomical assumptions.
Anatomical identity
Anchors hyoid identification to species, anatomical context and evidence.
Identity evidence
Record the landmarks and contextual relationships supporting identification as a hyoid bone.
- Which visible landmarks and anatomical relationships support hyoid identification? definition
- Which specimen record or acquisition establishes the individual, species and anatomical context? provenance
Body and horns
Describes the central body and paired horns without confusing missing observations with missing anatomy.
Component inventory
Record each identifiable component, its side and the completeness of its representation.
- Which portions of the body, greater horns and lesser horns are identifiable on each side? definition
- Does an apparently missing component reflect limited coverage, specimen damage or supported anatomical absence? boundary
Suspension and topography Records the hyoid's position and the soft-tissue relationships that suspend and couple it to neighbouring structures.
Hyoid identity and function depend on relationships that an isolated shape description cannot capture.
Regional position
Locates the hyoid within a documented posture and anatomical reference frame.
Position relative to neighbours
Describe location relative to the mandible, tongue base and larynx under stated observation conditions.
- Where is the hyoid relative to the mandible and larynx in the observed posture? measurement
- Which landmarks, head position and image plane define the reported position? provenance
Soft-tissue attachments
Maps muscular, ligamentous and membranous connections to particular hyoid regions.
Attachment map
Separate directly observed attachments from relationships supplied by a reference anatomy.
- Which muscles, ligaments or membranes connect to each identified region of this hyoid? definition
- Which connections are directly demonstrated, and which are inferred from the applicable anatomical reference? provenance
Task-dependent hyoid motion Captures hyoid trajectories and their timing relative to neighbouring structures during defined tasks.
A static position does not establish how the hyoid moves or participates in coordinated swallowing and other actions.
Excursion and timing
Defines reproducible measurements of movement from a stated baseline.
Recorded hyoid trajectory
Record displacement and timing together with task conditions and tracking limitations.
- What anterior and superior displacement is observed from the defined baseline during the recorded task? measurement
- Which task conditions, spatial calibration and frame rate support the trajectory and timing measurements? provenance
Coordination with neighbours
Relates observed hyoid motion to concurrently measured laryngeal or mandibular movement.
Movement coupling
Describe measured coordination while keeping whole-system functional judgments separate.
- How does hyoid movement align in time with concurrently observed laryngeal or mandibular movement? measurement
- Which conclusions about swallowing or airway function require evidence beyond the hyoid trajectory? boundary
Variation and structural integrity Distinguishes hyoid morphology and developmental interfaces from suspected damage or other structural change.
Fusion, asymmetry, incomplete imaging and specimen alteration can complicate interpretation of apparent hyoid abnormalities.
Morphology and union
Records dimensions, asymmetry and the union of the greater horns with the body.
Shape and fusion profile
Describe observed geometry and union status without using either as an unsupported proxy for age or pathology.
- What are the measured body and greater-horn dimensions, and how do the two sides differ? measurement
- What evidence supports the assigned union status at each body-greater horn interface? provenance
Discontinuities and review
Documents suspected disruption and the evidence needed to resolve its interpretation.
Structural change assessment
Locate a suspected discontinuity and distinguish observation from conclusions about injury, timing or cause.
- Where is the suspected discontinuity, and what distinguishes it from an unfused interface, imaging artefact or specimen-processing damage? boundary
- What additional imaging, specimen examination or specialist review is needed before classifying the structural change? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
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.
- The definition assumes human anatomy; the registry should confirm whether the intended scope includes other vertebrates.
- Size, shape and fusion of the greater horns with the body vary with development and between individuals; no universal measurement range is supplied.
- This description is recalled anatomical knowledge, not source-verified research.
- Which of these check these first hold for the sense of hyoid bone this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Terminologia Anatomica - Os hyoideum - The Latin anatomical name; this is a nomenclature term rather than a numeric identifier.
- Which of these identifiers and schemes hold for the sense of hyoid bone this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- Terminologia Anatomica, maintained by the Federative International Programme for Anatomical Terminology (FIPAT), standardizes anatomical naming.
- Which of these standards and regulation hold for the sense of hyoid bone this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Provides attachment for muscles that position the tongue and floor of the mouth.
- Participates in coordinated movement during swallowing.
- Serves as an anatomical landmark in neck imaging and surgery.
- Is examined in forensic investigations of neck trauma.
- Which of these real-world use hold for the sense of hyoid bone 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.
- Fracture can occur with direct neck trauma or compression.
- Injury and associated soft-tissue swelling can impair swallowing or threaten the airway.
- A hyoid fracture alone does not establish the mechanism or circumstances of a death.
- Which of these failure modes and hazards hold for the sense of hyoid bone 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.
- Hyoid apparatus - In comparative vertebrate anatomy, this denotes a broader supporting complex whose components vary among groups; the human hyoid bone is a particular anatomical structure.
- Thyroid cartilage - This is cartilage forming part of the laryngeal framework below the hyoid, whereas the hyoid is a separate bone.
- Mandible - The mandible is the lower jaw and articulates with the skull; the hyoid lies below it and has no direct bony articulation.
- Greater and lesser horns of the hyoid - These are paired projections belonging to the hyoid, rather than separate names for the whole bone.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of hyoid bone this model covers, and on what evidence? provenance
What the second pass must settle
- Does the registry intend the human hyoid bone specifically, or a comparative anatomical concept spanning multiple species?
- Which anatomical references should govern attachment terminology and correspondence between human and nonhuman hyoid components?
- Which population- and method-specific evidence supports interpretation of dimensions, asymmetry and body-greater horn fusion?
- Which acquisition protocols and reference frames make hyoid excursion measurements comparable across tasks and observers?
- What evidence standards should distinguish developmental interfaces, injury, disease-related change and postmortem or preparation damage?