The structure that extends from the pyloric junction of the stomach to the duodenojejunal junction. It is divided into 4 parts for ease of description.

Arteries

These are by two main arteries

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Superior pancreaticoduodenal artery from the gastroduodenal artery supplying the proximal (foregut) part.

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Inferior pancreaticoduodenal artery from superior mesenteric artery, supplying the distal (midgut) part

The intraperitoneal first part receives further supply from the following arteries

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Proper hepatic artery via the supraduodenal artery

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Right gastric artery

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Right gastroepiploic artery

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Retroduodenal branch of gastroduodenal artery

Veins:

The veins are run with the arteries but have different drainage patterns.

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Superior pancreaticoduodenal vein drains into the superior mesenteric vein.

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Inferior pancreaticoduodenal vein drains into the superior mesenteric vein

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Right gastric vein drains directly close to its origin at the level of neck of pancreas

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Right gastroepiploic vein drains into superior mesenteric vein

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Retroduodenal vein drains into superior mesenteric vein

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All veins drain into the portal vein, which enters the liver.

Nerves:

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Parasympathetic fibers are those which have reached the celiac plexus from the anterior and posterior vagus.

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Sympathetic fibers are the splanchnic nerves entering the celiac plexus

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There is nothing in anatomy not found in this website

Electronic School of Medicine
Creator: Oluwole Ogunranti

 

 

1- first part, 2- second part, 3- third part, 4- fourth part of duodenum  

 

 

 

 

 

 

 

 

 

 

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