human heart 3d model

Create a highly detailed 3D model of a half human heart, longitudinally sectioned to clearly show the internal anatomy. The model should display the left and right atria, left and right ventricles, septum, heart valves (mitral, tricuspid, aortic, and pulmonary), major blood vessels (aorta, pulmonary artery, pulmonary veins, and vena cava), and internal muscle structures (trabeculae carneae). The outer surface should have realistic texture and anatomical accuracy. The cut section should clearly expose internal chambers with educational labeling. Scientific, medical accuracy, high resolution, suitable for 3D printing and classroom demonstration.