# Lung ventilation anatomy subset

`lung-anatomy-v1.glb` is a selective adaptation of the repository's
`human-body-overview-v20.glb`, from **Z-Anatomy — The libre 3D atlas of anatomy —
CC BY-SA 4.0**, including the upstream attribution **BodyParts3D — The Database
Center for Life Science — CC BY-SA 2.1 Japan**.

- Source: https://github.com/Z-Anatomy/Models-of-human-anatomy
- Upstream terms and attributions: https://github.com/Z-Anatomy/Models-of-human-anatomy/blob/master/License.txt
- Adapted asset license: https://creativecommons.org/licenses/by-sa/4.0/
- BodyParts3D / DBCLS: https://dbarchive.biosciencedbc.jp/en/bodyparts3d/
- Original model: Kousaku OKUBO; anatomy/design: Gauthier KERVYN.

Adaptation by the Digital Learning Platform, 2026-10-16: selected five lung
lobes, 29 airway structures, diaphragm and eight ribs from one consistent v20
world coordinate system. Baked world transforms, removed materials/textures,
cut anterior rib ends and the inferior diaphragm crura to expose the thoracic
teaching window, welded vertices and recalculated smooth normals, and applied
meshopt compression. Diaphragm triangles are clipped exactly to the lower
teaching plane rather than removed whole. No whole-body asset is
loaded by this resource. Source/output SHA-256, structure names and bounds
are recorded in `anatomy-provenance.json`. Export is reproducible with
`node src/resources/biology/lung-ventilation/tools/extract-anatomy.mjs`.

Runtime recoloring, the volume-preserving educational deformation and airflow
annotations are changes made for this learning resource. The movement is not
a clinical or detailed pleural-mechanics simulation. Upstream exceptions for
inner-ear/kidney models do not apply to this thoracic-only subset; none of
those structures or textures is included.