Learn / Anatomy in 3D
Anatomy in 3D
Rotate, isolate and click real 3D models of the back, shoulder, arm and thorax — the structures on the midterm practical list. Explore to learn where things sit, Identify and Find to drill, Checklist to walk the practical list structure by structure and rate yourself, Nerves & arteries to trace a course from origin to termination, and Transitions to click a vessel and see what it becomes.
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drag to rotate · wheel to zoom · right-drag to pan · click a structure. 3D model: Z-Anatomy (CC BY-SA 4.0), itself derived from BodyParts3D © The Database Center for Life Science (CC BY-SA 2.1 Japan); meshes via the Anatria-3D export, polygon-reduced for the web.
⚠ Model caveat. Z-Anatomy shipped the intercostal bundle stacked upside down — measured against the geometry, the nerve sat 1–3 mm ABOVE the artery at every level on both sides, with the vein lowest. That is corrected here: the vein was raised into the costal groove and the nerve dropped below both, tapering to zero at the vertebral end so the rami stay attached. It now measures vein → artery → nerve, superior to inferior, with ~3 mm and ~2 mm between them (92% of samples on the right, 99% on the left). Remember why the order matters: the nerve is lowest and least protected, so a chest tube goes in along the SUPERIOR border of the rib below. This is a corrected model, not the original — the source atlas is still wrong here.
Transitions
Where things become something else
Click a vessel or nerve to see what it becomes, what it came from, and the landmark where the name changes. Then trace up or down the tree, or drill that structure.
6 of 56 structures in the transitions data have geometry today — all in the thorax model, plus the subclavian artery in the whole-limb model. The arm, shoulder and back models carry muscle and bone only, and the whole-limb model carries just that one vessel, so most of the limb's vessels and nerves are reference-only until the upper-limb neurovascular region is built.
Clickable here
Subclavian a.Axillary a.Axillary v.Subclavian v.Internal jugular v.Brachiocephalic v.