Homo sapiens common iliac artery http://upload.wikimedia.org/wikipedia/commons/6/6e/Iliac_artery_bifurcation_and_aorta.PNG SCTID:362050007 FMA:14764 NCIT:C32357 EHDAA:2553 See notes for parent class arteria iliaca communis Wikipedia:Common_iliac_artery EHDAA2:0000311 EMAPA:17310 The common iliac arteries are two large arteries, about 4cm long in adults but more than a centimetre in diameter, that originate from the aortic bifurcation. The arteries run inferolaterally, along the medial border of the psoas muscles to the pelvic brim, where they bifurcate into the external iliac artery and internal iliac artery. The common iliac artery, and all of its branches, exist as paired structures (that is to say, there is one on the left side and one on the right). The distribution of the common iliac artery is basically the pelvis and lower limb on the corresponding side. Both common iliac arteries are accompanied along their course by common iliac veins. [WP,unvetted]. UBERON:0001191 UMLS:C1261084 MA:0001972 common iliac arterial tree iliac artery abdominal aorta artery