Anatomio registered rectus abdominis geometry — CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0/ Z-Anatomy — Gauthier Kervyn and contributors FBX publication and Unity application — Lluís Vinent Underlying BodyParts3D — DBCLS / Kousaku Okubo; original CC BY-SA 2.1 Japan credit retained Original BodyParts3D attribution: https://dbarchive.biosciencedbc.jp/en/bodyparts3d/desc.html Original license credit: https://creativecommons.org/licenses/by-sa/2.1/jp/ Source repository: https://github.com/LluisV/Z-Anatomy Pinned revision: 6c7f9016bd5899ac8edafd31b9900c151df42ed6 Rendering detail, 2026-10-24: Both rectus objects reproduce the source FBX Tendon material labels with pale illustrative color when unselected; other faces are red and selection remains gold. Each side has 6611 Tendon-labeled triangles of 20604. Labels include transverse bands and end tendon areas; they are not independently validated tissue segmentation. Positions and smooth normals are unchanged. Derived face labels retain CC BY-SA 4.0 and the credits in this file. Geometry files: https://raw.githubusercontent.com/LluisV/Z-Anatomy/6c7f9016bd5899ac8edafd31b9900c151df42ed6/Resources/Models/FBX/MuscularSystem100.fbx and SkeletalSystem100.fbx https://github.com/LluisV/Z-Anatomy/blob/6c7f9016bd5899ac8edafd31b9900c151df42ed6/README.md https://github.com/Z-Anatomy/Models-of-human-anatomy/blob/master/License.txt Changes: Both complete rectus abdominis meshes only. Native FBX world matrices and axis conversion are retained upstream; one shared positive uniform scale, rotation and translation maps these two muscles into BodyParts3D coordinates. Transform and per-mesh provenance are in provenance.json. No cuts, local deformation, new mirror copies, obliques, transversus surfaces or duplicate bones. Source-authored left geometry uses reflected transforms, not an independent bilateral specimen. Placement is approximate; attachment accuracy and anatomical review remain pending. Regional Abdomen retains its native-source bone context. CC BY-SA 4.0 applies to this supplement; other scene assets retain their recorded licenses.