Abdominal Aorta

The abdominal Aorta supplies oxygenated blood to the abdominal organs and other visceral structures through its branches Position

It starts posterior to the arcuate ligament at the T12 level from the descending (thoracic) Aorta It ends to the left of the mid-line at the L4 level and branches to become the common iliac arteries

Topographical Relations

Anterior

Celiac trunk, branches and plexus Lesser sac Superior mesenteric, inferior mesenteric and left renal artery Pancreas Duodenum (ascending part) Attachment of mesentery

Posterior

Lumbar arteries Left lumbar vein Vertebral bodies

Right

Cisterna chyli Thoracic duct Azygos vein Right crus of diaphragm Inferior Vena Cava

Left

Left crus of diaphragm Duodenojejunal flexure Sympathetic trunk Inferior mesenteric vessels

Parietal Branches

Inferior phrenic artery → phrenic and supra-renal branch Renal artery → ureteric and supra-renal branch → apical, upper, middle, lower and posterior branches Gonadal artery Lumbar arteries Spinal arteries Common iliac artery

Visceral Branches

Renal artery Common iliac artery Medial sacral artery Celiac trunk:-

Left gastric artery → esophageal branch

Splenic artery → short gastric branch, splenic branch and left gastroepiploic artery

Common hepatic artery → gastro-duodenal and proper hepatic artery

Superior mesenteric artery:-

Jejunal branch

Ileal branch

Iliocolic artery → appendicular, cecal and ascending colic artery

Right colic artery

Middle colic artery

Inferior pancreatico-duodenal (anterior and posterior) artery

Inferior mesenteric artery:-

Left colic artery Sigmoid artery

Superior rectal artery

Links

Bibliography

SNELL, Richard S. Clinical Anatomy by Regions. 8th Edition edition. 2004. ISBN 978-0-7817-6404-9.

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