<unk>  is the combination of an atrial septal defect), a ventricular septal defect, and anatomical abnormalities of the tricuspid and mitral valves.
Atrioventricular canal
Atrioventricular nodal branch
Atrioventricular node
Interventricular septum
Tricuspid valve
Interatrial septum
Bundle of Kent
Coronary sulcus