has part has part has_part characteristic of part of has modifier abnormal systemic artery morphology abnormal common iliac artery morphology MP:0013990 any structural anomaly of the two large arteries that originate from the aortic bifurcation of the abdomainal aorta; the right and left common iliac arteries run along each side of the body towards the edges of the pelvis, where they each split again into internal and external iliac arteries at the pelvic inlet morphology abnormal common iliac artery