• Source: Left gastric artery

In human anatomy, the left gastric artery arises from the celiac artery and runs along the superior portion of the lesser curvature of the stomach before anastomosing with the right gastric artery (which runs right to left). It also issues esophageal branches that supply lower esophagus and ascend through the esophageal hiatus to form anastomoses with the esophageal branches of thoracic part of aorta.




Anatomy






= Origin

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The LGA usually arises from (the superior aspect of) the coeliac trunk - sometimes as a terminal branch of a trifurcation, and more rarely as a side branch of the splenic artery or of common hepatic artery. Sometimes it originates directly from aorta or from arteria phrenica inferior.




= Course

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From the crus of diaphragm, the LGA arches obliquely anterior-ward and to the left to reach the left curvature of the stomach just inferior to the gastric cardia (thus erecting the gastropancreatic (peritoneal) fold).




= Fate

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Upon reaching the cardia, the LGA splits into two terminal branches - a ventral one and a dorsal one - which anastomose with corresponding terminal branches of the right gastric artery, together providing arterial supply to the lesser curvature of the stomach.




= Branches

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Besides its terminal ventral branch and dorsal branch, the LGA yields multiple side branches: the left lateral hepatic artery, posterior esophageal artery, anterior esophagocardiotuberous artery, branches to lymph nodes, and omental branches.




Clinical significance


In terms of disease, the left gastric artery may be involved in peptic ulcer disease: if an ulcer erodes through the stomach mucosa into a branch of the artery, this can cause massive blood loss into the stomach, which may result in such symptoms as hematemesis or melaena.




Additional images



















References






External links


Anatomy photo:38:01-0103 at the SUNY Downstate Medical Center - "Stomach, Spleen and Liver: The Right and Left Gastric Artery"
Cross section image: pembody/body8a—Plastination Laboratory at the Medical University of Vienna
celiactrunk at The Anatomy Lesson by Wesley Norman (Georgetown University)
Branching at uhrad.com

Kata Kunci Pencarian:

• Lambung
• Left gastric artery
• Right gastric artery
• Short gastric arteries
• Hepatic artery proper
• Gastric arteries
• Stomach
• Curvatures of the stomach
• Esophageal branches of left gastric artery
• Left gastroepiploic artery
• Gastric plexuses