Left gastric artery
{{Short description|Artery}}
{{Infobox artery
| Name = Left gastric artery
| Latin = arteria gastrica sinistra
| Image = Gray532.png
| Caption = The left gastric artery and other branches of the celiac artery (stomach in situ). Left gastric artery identified near lesser curvature.
| Image2 = Illu lymph chain08.jpg
| Caption2 = Left gastric artery is at #2 -- the upper of the two arrows.
| BranchFrom = Celiac artery
| BranchTo =
| Vein =
| Supplies =
}}
In human anatomy, the left gastric artery arises from the celiac artery and runs along{{Citation |last=Lung |first=Kirsten |title=Anatomy, Abdomen and Pelvis, Arteries |date=2022 |url=http://www.ncbi.nlm.nih.gov/books/NBK525959/ |work=StatPearls |place=Treasure Island (FL) |publisher=StatPearls Publishing |pmid=30247834 |access-date=2023-01-14 |last2=Lui |first2=Forshing}} the superior portion of{{Citation needed|date=January 2023}} the lesser curvature of the stomach before anastomosing with the right gastric artery (which runs right to left{{Citation needed|date=January 2023}}). 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.{{Citation needed|date=January 2023}}
Anatomy
= Origin =
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.{{Cite web |title=Artère gastrique gauche - Dictionnaire médical de l'Académie de Médecine |url=https://www.academie-medecine.fr/le-dictionnaire/index.php?q=art%C3%A8re%20gastrique%20gauche |access-date=2024-05-09 |website=www.academie-medecine.fr}}
= Course =
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 =
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 =
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
File:Stomach blood supply.svg|Blood supply to the stomach: left and right gastric artery, left and right gastro-omental artery and short gastric artery.Essential Clinical Anatomy. K.L. Moore & A.M. Agur. Lippincott, 2 ed. 2002. Page 150
File:Gray533.png|The celiac artery and its branches; the stomach has been raised and the peritoneum removed.
File:TIEU 0442.gif|Arteries and veins around the pancreas and spleen.
References
{{Reflist}}
External links
- {{SUNYAnatomyLabs|38|01|01|03}} - "Stomach, Spleen and Liver: The Right and Left Gastric Artery"
- {{ViennaCrossSection|pembody/body8a}}
- {{NormanAnatomy|celiactrunk}}
- [http://www.uhrad.com/ctarc/ct108.htm Branching at uhrad.com]
{{Arteries of thorax and abdomen}}
{{Authority control}}