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WordNet
superior mesenteric artery

n. originates from the upper part of the aorta that supplies the small intestines and the cecum and the colon

Wikipedia
Superior mesenteric artery

In human anatomy, the superior mesenteric artery (SMA) 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.