Gastroduodenal artery

Gastroduodenal artery
The celiac artery and its branches.
Branches of the celiac artery. The gastroduodenal artery appears on the left part of the figure and overlays/is anterior to the portal vein. The stomach is raised and inverted - compare with celiac artery branches - stomach in situ.
Details
Source	Common hepatic artery
Branches	Supraduodenal artery, right gastroepiploic artery, superior pancreaticoduodenal artery
Supplies	Pylorus, proximal duodenum
Identifiers
Latin	arteria gastroduodenalis
TA98	A12.2.12.016
TA2	4215
FMA	14775
Anatomical terminology

In anatomy, the gastroduodenal artery is a small blood vessel in the abdomen. It supplies blood directly to the pylorus (distal part of the stomach) and proximal part of the duodenum. It also indirectly supplies the pancreatic head (via the anterior and posterior superior pancreaticoduodenal arteries).

Structure

The gastroduodenal artery most commonly originates from the common hepatic artery, which is a branch of the celiac trunk. Occasionally, it may arise from the proper hepatic artery or from the right or left hepatic arteries, but these are less common anatomical variations. It first gives rise to the supraduodenal artery, followed by the posterior superior pancreaticoduodenal artery. It terminates in a bifurcation when it splits into the right gastroepiploic artery and the anterior superior pancreaticoduodenal artery (superior pancreaticoduodenal artery).

These branches form functional anastomoses with the anterior and posterior inferior pancreaticoduodenal arteries from the superior mesenteric artery. Note that the exact branching of vessels from the gastroduodenal artery is variable. Typically, the posterior and anterior superior pancreaticoduodenal arteries branch independently in that order, but can rarely come off a common trunk.

Function

It supplies blood directly to the pylorus (distal part of the stomach) and proximal part of the duodenum. It also indirectly supplies the pancreatic head (via the anterior and posterior superior pancreaticoduodenal arteries).

Clinical significance

Peptic ulcer

The gastroduodenal artery can be the source of a significant gastrointestinal bleed, which may arise as a complication of peptic ulcer disease. Because of its close relationship to the posteromedial wall of the second part of the duodenum, deeply penetrating ulcers or tumours of the duodenum may cause torrential bleeding from the gastroduodenal ‘artery of haemorrhage'. It occurs because the profuse arterial network in the region ensures a high flow rate in the vessel.

Additional images

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  Gastroduodenal artery

External links

• "Gastroduodenal artery". Medcyclopaedia. GE. Archived from the original on 2007-06-20.
• med/3566 at eMedicine - "Upper Gastrointestinal Bleeding: Surgical Perspective"
• Anatomy photo:38:03-0207 at the SUNY Downstate Medical Center - "Stomach, Spleen and Liver: Contents of the Hepatoduodenal ligament"
• Anatomy image:7899 at the SUNY Downstate Medical Center
• celiactrunk at The Anatomy Lesson by Wesley Norman (Georgetown University)