jejunal arteries jejunal arteries the jejunal arteries are 4-5 branches of the superior mesenteric artery which supply blood to the jejunum. they arise from the left side of the superior mesenteric artery. jejunal arteriesloop of small intestine showing distribution of intestinal arteries.jejunal arteriesdetailssourcesuperior mesenteric arteryveinjejunal veinssuppliesjejunumidentifierslatinarteriae jejunalesta98a12.2.12.057ta24256fma70809anatomical terminology