The superior mesenteric vessels are composed of the superior mesenteric artery and the superior mesenteric vein. In human anatomy, the superior mesenteric artery arises from the anterior surface of the abdominal aorta, just inferior to the origin of the celiac trunk, and supplies the intestine from the lower part of the duodenum through two-thirds of the transverse colon, as well as the pancreas. The superior mesenteric artery lies to the left of the similarly named vein, the superior mesenteric vein.