Fig. 1
From: Anatomy of the ventricular septal defect in congenital heart defects: a random association?
a: Right ventricular aspect of the ventricular septum in a normal heart. The muscular bands of the right ventricle are: the ventriculo-infudibular fold (VIF, including parietal band [5] and subpulmonary conus [1]); the outlet septum (star), the septal band or septomarginal trabeculation (SB) with its two limbs, anterosuperior and postero-inferior, the moderator band (MB), the anterior papillary muscle of the tricuspid valve. PV: pulmonary valve; TV: tricuspid valve. b: represent the four main anatomic types of ventricular septal defects viewed from the right ventricle. C: central VSD, OJA: outlet juxta arterial VSD, Inl: Inlet VSD, M: muscular VSD, Out: outlet VSD, T: tricuspid Valve, VIF: ventriculo-infundibular fold