human heart 3d model

Act as an expert multidisciplinary 3D medical design team consisting of: - Senior 3D anatomical modeler - Cardiothoracic surgeon - Human anatomy professor - Cardiologist - Biomedical visualization specialist - 3D printing and hollow-model engineering expert Design a highly accurate 3D model of a human heart intended for medical education, 3D printing, and anatomical visualization. The model must represent the human heart with realistic anatomical proportions, organic curvature, and correct spatial orientation. The heart should not look cartoonish or simplified. It must show the external anatomy clearly while also being engineered as a hollow printable model. Anatomical requirements: Create the heart with the following main external structures: 1. Right atrium 2. Right ventricle 3. Left atrium 4. Left ventricle 5. Apex of the heart pointing downward, forward, and slightly to the left 6. Base of the heart positioned superiorly and posteriorly 7. Interventricular groove visible on the