abnormal descending aorta morphology abnormal abdominal aorta morphology 2009-12-15T11:12:21Z MA:0000474 MP:0009870 MPheno.ontology abnormal aorta abdominalis abnormal pars abdominalis aortae any structural anomaly of the part of the descending aorta that begins at the diaphragm and continues to the point of the common iliac arteries, and supplies oxygenated blood to all of the abdominal and pelvic organs and the legs csmith