{
  "asset": "neck-muscles.glb",
  "sourceRepository": "https://github.com/organui/muscles-3d",
  "commit": "1c746c36d12a78c5f3fd452dbe5d29ae869cad04",
  "sourceSHA256": "615ed2cf0d5ca9aa63f30bb806a65c740ed2ab057463a19505e19eff2bf207ce",
  "sourceManifestSHA256": "212305711cf3ff62c73a9eb9a67b98465a3dd68c81871340ede0034f488b022d",
  "outputSHA256": "4ce6b6226ff683feeedb16f3fe1608858a4ae71dabb1512bb9484c01a0696fc2",
  "license": "CC-BY-SA-2.1-JP",
  "licenseURL": "https://creativecommons.org/licenses/by-sa/2.1/jp/deed.en",
  "attribution": "BodyParts3D, © The Database Center for Life Science licensed under CC Attribution-Share Alike 2.1 Japan",
  "modifications": "Extracted 24 complete neck muscle groups. Platysma and sternocleidomastoid use original STL parts from the same pinned BodyParts3D 3.0 mirror, with hash verification, vertex reindexing and smooth normal recomputation; source positions and triangle counts retained. Other groups invert the documented OrganUI transform to original millimetres and retain upstream simplification. No new anatomy, deformation or further simplification.",
  "originalMirror": {
    "repository": "https://github.com/Kevin-Mattheus-Moerman/BodyParts3D",
    "commit": "f0eeb6e843380cfe6b83797cf8c3e1af74de5e61"
  },
  "originalResolution": [
    "platysma",
    "sternocleidomastoid"
  ],
  "registration": "muscle-registration.json",
  "registrationLimitation": "Reference-only. Cranial controls do not validate neck alignment; no character-neck fit is supplied.",
  "excluded": {
    "trapezius": "Upstream combines cervical and thoracic subdivisions. No isolated upper-trapezius mesh is asserted.",
    "semispinalis": "Upstream combines capitis, cervicis and thoracic subdivisions. No isolated neck-only subdivision is asserted."
  },
  "upstreamTransform": {
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    "scale": 0.004,
    "axes": "[x, z, -y]"
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  "upstreamSimplification": {
    "tool": "meshoptimizer 1.1.1 simplify (ErrorAbsolute)",
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    "floorTriangles": 240
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  "structures": [
    {
      "id": "neck-platysma",
      "name": "platysma",
      "system": "Muscular",
      "layerId": "neckMuscles",
      "meshNames": [
        "platysma"
      ],
      "summary": "Source-derived platysma; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
      "sourceReference": "https://github.com/organui/muscles-3d/tree/1c746c36d12a78c5f3fd452dbe5d29ae869cad04",
      "reviewStatus": "draft",
      "keywords": [
        "platysma",
        "FMA45738",
        "FMA45739",
        "FMA45740",
        "neck",
        "cervical"
      ],
      "sourceIds": [
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        "FMA45740"
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      "sourceVersion": "3.0 (20110915)",
      "limitations": [
        "Bilateral parts and subdivisions grouped for selection",
        "Original source resolution; smooth vertex normals recomputed without changing source positions",
        "Cranial cross-version controls do not validate cervical alignment",
        "No registered character-neck overlay",
        "No medical review"
      ]
    },
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      "id": "neck-sternocleidomastoid",
      "name": "sternocleidomastoid",
      "system": "Muscular",
      "layerId": "neckMuscles",
      "meshNames": [
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      ],
      "summary": "Source-derived sternocleidomastoid; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
      "sourceReference": "https://github.com/organui/muscles-3d/tree/1c746c36d12a78c5f3fd452dbe5d29ae869cad04",
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        "cervical"
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      "sourceVersion": "3.0 (20110915)",
      "limitations": [
        "Bilateral parts and subdivisions grouped for selection",
        "Original source resolution; smooth vertex normals recomputed without changing source positions",
        "Cranial cross-version controls do not validate cervical alignment",
        "No registered character-neck overlay",
        "No medical review"
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      "id": "neck-digastric",
      "name": "digastric",
      "system": "Muscular",
      "layerId": "neckMuscles",
      "meshNames": [
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      ],
      "summary": "Source-derived digastric; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
      "sourceReference": "https://github.com/organui/muscles-3d/tree/1c746c36d12a78c5f3fd452dbe5d29ae869cad04",
      "reviewStatus": "draft",
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        "FMA46304",
        "FMA46305",
        "FMA46306",
        "FMA46307",
        "neck",
        "cervical"
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      "sourceIds": [
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        "FMA46305",
        "FMA46306",
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      "sourceParts": [
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        "Upstream simplification within a reported 0.8 mm bound",
        "Cranial cross-version controls do not validate cervical alignment",
        "No registered character-neck overlay",
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    {
      "id": "neck-stylohyoid",
      "name": "stylohyoid",
      "system": "Muscular",
      "layerId": "neckMuscles",
      "meshNames": [
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      ],
      "summary": "Source-derived stylohyoid; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
      "sourceReference": "https://github.com/organui/muscles-3d/tree/1c746c36d12a78c5f3fd452dbe5d29ae869cad04",
      "reviewStatus": "draft",
      "keywords": [
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        "neck",
        "cervical"
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        "Upstream simplification within a reported 0.8 mm bound",
        "Cranial cross-version controls do not validate cervical alignment",
        "No registered character-neck overlay",
        "No medical review"
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    {
      "id": "neck-mylohyoid",
      "name": "mylohyoid",
      "system": "Muscular",
      "layerId": "neckMuscles",
      "meshNames": [
        "mylohyoid"
      ],
      "summary": "Source-derived mylohyoid; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
      "sourceReference": "https://github.com/organui/muscles-3d/tree/1c746c36d12a78c5f3fd452dbe5d29ae869cad04",
      "reviewStatus": "draft",
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        "neck",
        "cervical"
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        "Upstream simplification within a reported 0.8 mm bound",
        "Cranial cross-version controls do not validate cervical alignment",
        "No registered character-neck overlay",
        "No medical review"
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      "name": "geniohyoid",
      "system": "Muscular",
      "layerId": "neckMuscles",
      "meshNames": [
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      ],
      "summary": "Source-derived geniohyoid; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
      "sourceReference": "https://github.com/organui/muscles-3d/tree/1c746c36d12a78c5f3fd452dbe5d29ae869cad04",
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        "neck",
        "cervical"
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        "Upstream simplification within a reported 0.8 mm bound",
        "Cranial cross-version controls do not validate cervical alignment",
        "No registered character-neck overlay",
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    {
      "id": "neck-sternohyoid",
      "name": "sternohyoid",
      "system": "Muscular",
      "layerId": "neckMuscles",
      "meshNames": [
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      ],
      "summary": "Source-derived sternohyoid; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
      "sourceReference": "https://github.com/organui/muscles-3d/tree/1c746c36d12a78c5f3fd452dbe5d29ae869cad04",
      "reviewStatus": "draft",
      "keywords": [
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        "FMA13347",
        "neck",
        "cervical"
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        "Upstream simplification within a reported 0.8 mm bound",
        "Cranial cross-version controls do not validate cervical alignment",
        "No registered character-neck overlay",
        "No medical review"
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    {
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      "name": "omohyoid",
      "system": "Muscular",
      "layerId": "neckMuscles",
      "meshNames": [
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      ],
      "summary": "Source-derived omohyoid; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
      "sourceReference": "https://github.com/organui/muscles-3d/tree/1c746c36d12a78c5f3fd452dbe5d29ae869cad04",
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        "cervical"
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      "meshNames": [
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      "summary": "Source-derived sternothyroid; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
      "sourceReference": "https://github.com/organui/muscles-3d/tree/1c746c36d12a78c5f3fd452dbe5d29ae869cad04",
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        "neck",
        "cervical"
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      "summary": "Source-derived thyrohyoid; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
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      "layerId": "neckMuscles",
      "meshNames": [
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      "summary": "Source-derived scalenus anterior; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
      "sourceReference": "https://github.com/organui/muscles-3d/tree/1c746c36d12a78c5f3fd452dbe5d29ae869cad04",
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        "neck",
        "cervical"
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      "system": "Muscular",
      "layerId": "neckMuscles",
      "meshNames": [
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      "summary": "Source-derived scalenus medius; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
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        "neck",
        "cervical"
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      "system": "Muscular",
      "layerId": "neckMuscles",
      "meshNames": [
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      "summary": "Source-derived scalenus posterior; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
      "sourceReference": "https://github.com/organui/muscles-3d/tree/1c746c36d12a78c5f3fd452dbe5d29ae869cad04",
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        "FMA13389",
        "neck",
        "cervical"
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      "sourceParts": [
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        "Upstream simplification within a reported 0.8 mm bound",
        "Cranial cross-version controls do not validate cervical alignment",
        "No registered character-neck overlay",
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      "system": "Muscular",
      "layerId": "neckMuscles",
      "meshNames": [
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      "summary": "Source-derived longus colli; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
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        "FMA46287",
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        "neck",
        "cervical"
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      "layerId": "neckMuscles",
      "meshNames": [
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      "summary": "Source-derived longus capitis; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
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        "neck",
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      "summary": "Source-derived rectus capitis anterior; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
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        "neck",
        "cervical"
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        "Upstream simplification within a reported 0.8 mm bound",
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        "No registered character-neck overlay",
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      "system": "Muscular",
      "layerId": "neckMuscles",
      "meshNames": [
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      "summary": "Source-derived rectus capitis lateralis; retained as a complete muscle group.",
      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
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        "neck",
        "cervical"
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      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
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      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
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      "educationalDescription": "This is real BodyParts3D 3.0 geometry identified through OrganUI. Bilateral parts and any subdivisions are grouped for selection. The reference uses the same common similarity transform as the facial muscles, without individual scaling. Its fitting controls are cranial; no independent neck landmarks establish cervical fit. Character-neck overlay is unavailable. This is a draft anatomy inspection, without treatment guidance.",
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