We are developing LINDSAY Virtual Human, a 3-dimensional, interactive computer model of male and female anatomy and physiology. LINDSAY is designed to be used for medical education. One key characteristic of LINDSAY is the integration of computational models across a range of spatial and temporal scales. We simulate physiological processes in an integrative fashion: from the body level to the level of organs, tissues, cells, and sub-cellular structures. For use in the classroom, we have built LINDSAY Presenter, a 3D slide-based visualization and exploration environment that presents different scenarios within the simulated human body. We are developing LINDSAY Composer to create complex scenes for demonstration, exploration and investigation of physiological scenarios. At LINDSAY Composer′s core is a graphical programming environment, which facilitates the composition of complex, interactive educational modules around the human body.