title: Diagrammatic portrayal of variations in cardiac structure. Reference to transposition, dextrocardia and the concept of four normal hearts.
mesh_terms: D003331:Coronary Vessels / Q000033:anatomy & histology; D003914:Dextrocardia; D006321:Heart / Q000033:anatomy & histology*; D006325:Heart Atria / Q000033:anatomy & histology; D016027:Heart Transplantation; D006351:Heart Valves / Q000033:anatomy & histology; D006352:Heart Ventricles / Q000033:anatomy & histology; D006801:Humans; D012857:Situs Inversus; D013154:Spleen / Q000002:abnormalities; D014184:Transplantation, Homologous; D014188:Transposition of Great Vessels