Anatomy: HuBMAP CCF 3D Reference Object Library, heart (Browne et al., 2022), CC BY 4.0. Great vessels, coronaries, epicardial fat, shading, motion and the conduction model added by Total Heart Sim. Motion: base descent LV 14 / RV 20 mm (Steding-Ehrenborg 2015), ~8% outer volume change (Carlsson 2004), apex 10° / base 3° rotation (Young & Cowan 2012).