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In human anatomy, the superior mesenteric artery (SMA) is an artery which arises from the anterior surface of the abdominal aorta, just inferior to the origin of the celiac trunk, and supplies blood to the intestine from the lower part of the duodenum through two-thirds of the transverse colon, as well as the pancreas.
English: Axial section of the epigastric region showing splenic vein, pancreas, inferior vena cava (IVC), abdominal aorta, and superior mesenteric artery (SMA). Date 21 November 2021, 08:10:34
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 arises from the aorta at the level of the transpyloric plane and emerges between the head and neck of the pancreas. [8] The superior mesenteric vein is joined by the splenic vein to form the portal vein at the level of the transpyloric plane. [2] [8]
Anatomy photo:39:04-0102 at the SUNY Downstate Medical Center - "Intestines and Pancreas: Branches of Superior Mesenteric Artery" Anatomy image:7916 at the SUNY Downstate Medical Center v
The large intestine is primarily supplied by the right colic artery, middle colic artery, and left colic artery. They do not supply the duodenum of the small intestine. The duodenum is primarily supplied by the inferior pancreaticoduodenal artery and superior pancreaticoduodenal artery.
The term mesenteric artery is also used to describe smaller branches of these vessels which, particularly in smaller animals, provide a significant source of vascular resistance. These branches have a dense innervation by sympathetic nerves, allowing the brain to control their diameter and hence the resistance to blood flow to the gut.
The inferior pancreaticoduodenal artery is a branch of the superior mesenteric artery. This occurs opposite the upper border of the inferior part of the duodenum. As soon as it branches, it divides into anterior and posterior branches. These run between the head of the pancreas and the lesser curvature of the