"Create a highly detailed and anatomically accurate 3D model of a human stomach. Include realistic features such as: The gastric folds (rugae) inside the stomach. The cardiac region, fundus, body, pyloric antrum, and pyloric canal. Proper texturing to show muscle tissue and internal mucosa. Blood vessels (like gastric arteries/veins) around the stomach for added realism. A semi-transparent option to see internal structures. Style: Scientific/medical illustration, realistic shading, PBR materials. Format: Optimized for Blender/Unity/Unreal Engine (FBX, GLB, or OBJ)."