This is a medical-grade high-precision 3D model of adult heart and lung anatomy, which completely restores core anatomical structures such as bilateral lungs, bronchial tree, four heart chambers, valves, aorta, pulmonary artery and pulmonary veins, with accurate proportions and rich details, clearly showing the spatial relationship between the respiratory and blood circulatory systems.Blender native format only (.blend files). Models are created with standard PBR workflow, including complete albedo, normal and roughness maps, with wireframe previews and UV unwrap reference images provided.All models and materials are standardized named with clear file structure, can be directly imported into Blender for use, easy for secondary editing and modification.Suitable for medical education, popular science display, film and television special effects, medical VR/AR applications, health science content production and other commercial and non-commercial scenarios.