human anatomy 3d model

Create a highly detailed, anatomically educational 3D model of a human upper body for multi-color 3D printing. Show the head, neck, shoulders, chest, abdomen, both arms, and both hands. The body surface should be smooth matte white with simplified anatomical contours and no clothing. Display only three nerves in bright red, slightly raised from the surface for visibility: Median Nerve, Ulnar Nerve, and Radial Nerve. The nerves must follow anatomically accurate paths from the brachial plexus region in the neck/shoulder through the upper arm, elbow, forearm, wrist, and hand. The Median Nerve should continue into the palm and fingers, the Ulnar Nerve along the inner arm into the ring and little fingers, and the Radial Nerve along the posterior-lateral arm into the back of the hand. Educational medical-model style, clean geometry, watertight mesh, high anatomical accuracy, optimized for 3MF/STL export and Bambu Lab AMS multi-color printing. Neutral standing pose, arms slightly abducted (15