Give a diagram of blood supply of stomach
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blood supply of stomach diagram anatomy
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Here is a complete overview of the blood supply of the stomach, with diagrams:
Blood Supply of the Stomach
Diagram 1 - Arterial Supply (labeled anatomy view)
Diagram 2 - Full Blood Supply & Venous Drainage (schematic)
Arterial Supply
All arteries supplying the stomach are ultimately derived from the celiac trunk (the first major visceral branch of the abdominal aorta).
Lesser Curvature
| Artery | Origin | Course |
|---|---|---|
| Left gastric artery | Celiac trunk (directly) | Runs along the lesser curvature; gives esophageal branches |
| Right gastric artery | Common hepatic artery | Runs along the lesser curvature toward the left |
These two anastomose to form the lesser curvature arcade.
Greater Curvature
| Artery | Origin | Course |
|---|---|---|
| Left gastro-omental (gastroepiploic) artery | Splenic artery | Runs along the greater curvature toward the right |
| Right gastro-omental (gastroepiploic) artery | Gastroduodenal artery (branch of common hepatic) | Runs along the greater curvature toward the left |
These two anastomose to form the greater curvature arcade.
Fundus & Upper Body
- Short gastric arteries (4-5 branches) - arise from the splenic artery and supply the fundus and proximal stomach via the gastrosplenic ligament
- Posterior gastric artery - a branch of the splenic artery supplying the posterior wall
Venous Drainage
Venous drainage mirrors the arterial supply and drains into the portal venous system:
| Vein | Drains Into |
|---|---|
| Left gastric vein (coronary vein) | Portal vein |
| Right gastric vein | Portal vein |
| Right gastro-epiploic vein | Superior mesenteric vein |
| Left gastro-epiploic vein | Splenic vein |
| Short gastric veins | Splenic vein |
Clinical note: In portal hypertension, retrograde flow through the left gastric (coronary) vein leads to gastro-esophageal varices. In splenic vein thrombosis (e.g., from pancreatitis), isolated gastric varices can form via back-pressure through the gastroepiploic vessels.
Key Points
- The stomach is one of the best-vascularized organs in the abdomen due to its dual arcade system along both curvatures - this makes it resistant to ischemia
- This rich supply is why the stomach is commonly used as a conduit (gastric pull-up) in esophageal surgery
- The pre-pyloric vein of Mayo (also called the vein of Laterjet) is a surgical landmark marking the pylorus
Sources: Yamada's Textbook of Gastroenterology, 7th ed.; TeachMeAnatomy; InstantAnatomy
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