: Three-dimensional visualization facilitates human perception, imagination, and reasoning based on computer-represented knowledge. Since human imagination and reasoning is based on 3D-shapes, the presentation and validation of knowledge is most efficiently performed with the aid of geometric shapes. Thus, we propose the use of visualization methods in knowledge management, supporting qualitative information by quantitative data that is simpler to explore. We support our thesis by a case study modeling the ontology of a human heart. This work connects the areas of human knowledge as philosophical ontology and knowledge management as ontology in artificial intelligence.