has part has part has_part characteristic of towards has modifier overriding aortic valve overriding aorta MP:0000273 dextroposition of the aorta MPheno.ontology DA Fyler:1432 aortic dextroposition congenitally abnormal position of the aorta where the valve origin straddles the ventral septum and so receives ejected blood from the right ventricle as well as the left, frequently in conjunction with a ventricular septal defect abnormal heart and great artery attachment abnormal overlap with aorta interventricular septum membranous part