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The blood supply to the colon comes from the superior and inferior mesenteric arteries. Part of the rectum is supplied by the internal iliac system and this anastamoses with the lower branches of the inferior mesenteric system.
blood supply to the intestines the primary blood supply to the intestines comes from the three branches from the abdominal aorta which are not paired the celiac artery and the superior and inferior mesenteric arteries the celiac artery comes from the aorta through a space in the diaphragm called the aortic hiatus