In
anatomy
Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having its ...
, the gastroduodenal artery is a small
blood vessel
The blood vessels are the components of the circulatory system that transport blood throughout the human body. These vessels transport blood cells, nutrients, and oxygen to the tissues of the body. They also take waste and carbon dioxide away ...
in the
abdomen
The abdomen (colloquially called the belly, tummy, midriff, tucky or stomach) is the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. The abdomen is the front part of the abdominal segment of the torso. ...
. It supplies blood directly to the
pylorus
The pylorus ( or ), or pyloric part, connects the stomach to the duodenum. The pylorus is considered as having two parts, the ''pyloric antrum'' (opening to the body of the stomach) and the ''pyloric canal'' (opening to the duodenum). The ''pylori ...
(distal part of the
stomach
The stomach is a muscular, hollow organ in the gastrointestinal tract of humans and many other animals, including several invertebrates. The stomach has a dilated structure and functions as a vital organ in the digestive system. The stomach i ...
) 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 arises from either the
left hepatic artery or the
right hepatic artery
The hepatic artery proper (also proper hepatic artery) is the artery that supplies the liver and gallbladder. It raises from the common hepatic artery, a branch of the celiac artery.
Structure
The hepatic artery proper arises from the common h ...
instead.
It may also arise from the
common hepatic artery
The common hepatic artery is a short blood vessel that supplies oxygenated blood to the liver, pylorus of the stomach, duodenum, pancreas, and gallbladder.
It arises from the celiac artery and has the following branches:
Additional images
...
of the
coeliac trunk in a trifork arrangement with the two other arteries, but there are numerous variations of the origin.
[Bergman RA, Afifi AK, Miyauchi R. Variations in Origin of Gastroduodenal Artery. from Anatomy Atlases. (http://www.anatomyatlases.org/AnatomicVariants/Cardiovascular/Images0001/0017.shtml)] It first gives rise to the
supraduodenal artery
The supraduodenal artery is an artery which usually branches from Gastroduodenal artery
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 proxi ...
, followed by the
posterior superior pancreaticoduodenal artery
The superior pancreaticoduodenal artery is an artery that supplies blood to the duodenum and pancreas.
Structure
It is a branch of the gastroduodenal artery, which most commonly arises from the common hepatic artery of the celiac trunk, altho ...
. It terminates in a bifurcation when it splits into the
right gastroepiploic artery
The right gastroepiploic artery (or right gastro-omental artery) is one of the two terminal branches of the gastroduodenal artery. It runs from right to left along the greater curvature of the stomach, between the layers of the greater omentum, an ...
and the anterior superior pancreaticoduodenal artery (
superior pancreaticoduodenal artery
The superior pancreaticoduodenal artery is an artery that supplies blood to the duodenum and pancreas.
Structure
It is a branch of the gastroduodenal artery, which most commonly arises from the common hepatic artery of the celiac trunk, althou ...
).
These branches form functional anastomoses with the anterior and posterior
inferior pancreaticoduodenal arteries from the
superior mesenteric artery
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 ...
. 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
The pylorus ( or ), or pyloric part, connects the stomach to the duodenum. The pylorus is considered as having two parts, the ''pyloric antrum'' (opening to the body of the stomach) and the ''pyloric canal'' (opening to the duodenum). The ''pylori ...
(distal part of the
stomach
The stomach is a muscular, hollow organ in the gastrointestinal tract of humans and many other animals, including several invertebrates. The stomach has a dilated structure and functions as a vital organ in the digestive system. The stomach i ...
) 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
Gastrointestinal bleeding (GI bleed), also called gastrointestinal hemorrhage (GIB), is all forms of bleeding in the gastrointestinal tract, from the mouth to the rectum. When there is significant blood loss over a short time, symptoms may incl ...
, which may arise as a complication of
peptic ulcer disease
Peptic ulcer disease (PUD) is a break in the inner lining of the stomach, the first part of the small intestine, or sometimes the lower esophagus. An ulcer in the stomach is called a gastric ulcer, while one in the first part of the intestines ...
. 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.
[gray 40th, page 1127]
Additional images
File:Slide16fff.JPG, Gastroduodenal artery
References
External links
*
* - "Upper Gastrointestinal Bleeding: Surgical Perspective"
* - "Stomach, Spleen and Liver: Contents of the
Hepatoduodenal ligament
The hepatoduodenal ligament is the portion of the lesser omentum extending between the porta hepatis of the liver and the superior part of the duodenum.
Running inside it are the following structures collectively known as the portal triad:
* hep ...
"
*
*
{{Authority control
Arteries of the abdomen
Stomach