the endocardial cushions of the atrioventricular canal divide this canal divide this canal and left orfice formation of the membranous the interventricular septum and closure of the ostium ever the cushions fail to fuse the is a peristent atrioventrical canal with a cardiac septum this septal has an artial and ventricular separated valve leaflets atrioventricular orfice . the endocardial cushions atrioventricular canal fuse the artial septum is then that Above abnormality interventricular septum is closed this is the ostium primum is with a cleft anterior leaflet of the mitral valve and septal leaflet of the tricupsid valve .
abnormality partitioning of intervention canal is obliteration of the atrioventricular orifice.This abnormality is tricupsid atresia is absence or fusion of the tricupsid valves the is
1: patency of the oval foramen
3: hypertrophy of the left ventricle.
the membranous interventricular septum is the and left canal ridges and with the of of the inferior atrioventricular cushions the formation of this . Of the interventricular septum.I t that defects a of the membranous septum is . is as in isilated lesion abnormalities partition of the truncoconal . of the the blood carried the pulmonary artery 1.2 to one.7 than that the aorta the to the membranous ,bit the muscular the septum as 💝