Initial view shows a cross-section of the left atrium, mitral valve, the ascending aorta arising from left ventricle, aortic semilunar valve, beginning of interventricular septum, and right ventricle. Reverse shows cross-section of right ventricle, papillary muscle attached to interventricular septum, tricuspid valve, ascending aorta, and cross-section of both right and left atrium. Superior view shows right and left pulmonary artery.
18.5 Days