Superior Mesenteric Artery
The Superior Mesenteric Artery is an Anterior Branch of the Abdominal Aorta. It supplies the Midgut and is a major artery that supplies the gastrointestinal tract from teh third portion of the duodenum to the proximal part of the transverse colon. The rotation of the midgut is around the axis of the Superior Mesenteric Artery.

The SMA supplies the Midgut
The third portion of the duodenum
The jejunum
The ileum
The cecum
The ascending colon
The proximal part of the transverse colon
The Superior Mesenteric Artery is at the L1 Vertebral level
Anatomic Relations of the Superior Mesenteric Artery
Anterior →
Pylorus of the Stomach
Neck of the pancreas
Splenic Vein
Posterior →
Uncinate Process of the Pancreas
Inferior Portion of the Duodenum
Left Renal Vein
Marginal Artery of Drummond
It is an Anastomosis of the Superior and Inferior Mesenteric Arteries
SMA Branches
Middle Colic Artery
Right Colic Artery
Ileocolic Artery
IMA Branches
Left Colic Artery
Sigmoid Artery
The Arc of Riolan
Branches from the Middle and Left Colic Arteries
Site of direct communication between the SMA and IMA
Provides collateral blood flow during stenosis or occlusion
Branches of the Superior Mesenteric Artery (Chart)
