ileal arteries ileal arteries the ileal arteries are 12 branches of the superior mesenteric artery which supply blood to the ileum. they arise from the left side of the superior mesenteric artery. not to be confused with common iliac artery. ileal arteriesloop of small intestine showing distribution of intestinal arteries.ileal arteriesdetailssourcesuperior mesenteric arterybranchesstraight arteries of ileumveinileal veinssuppliesileumidentifierslatinarteriae ilealesta98a12.2.12.058ta24257fma70810anatomical terminology