anatomical heart 3d model

Generate a highly detailed, anatomically accurate 3D model of a human heart. The model should include all major structures such as the left and right atria, left and right ventricles, aorta, pulmonary arteries and veins, superior and inferior vena cava, and coronary vessels. Use realistic proportions and smooth organic shapes. The texture should resemble real muscle tissue with visible veins and color variations from deep red to lighter pink tones. The model should be suitable for medical visualization and educational purposes. Provide clean topology, UV-unwrapped mesh, and neutral lighting for easy integration into 3D scenes.