Stomach Arterial Supply Lecture

Overview

• The stomach receives arterial supply from the celiac trunk and its branches.
• Key organs involved: stomach, first and second parts of the duodenum, spleen, liver, and gallbladder.

Celiac Trunk

• Length: ~1 cm
• Origin: Aorta, between the right and left crura of the diaphragm.
• Branches:
  • Left Gastric Artery
  • Splenic Artery
  • Common Hepatic Artery

Left Gastric Artery

• Smallest branch of the celiac trunk.
• Pathway: Runs down the lesser curvature of the stomach.
• Characteristics:
  • Describes a convexity oriented superiorly.
  • Gives off esophageal branches (supplying the lower esophagus).
  • May give rise to an accessory hepatic artery (variable anatomical feature).
  • Provides gastric branches along the lesser curvature.

Common Hepatic Artery

• Splits into:
  • Gastroduodenal Artery
  • Hepatic Artery Proper

Hepatic Artery Proper

• Gives off:
  • Right Gastric Artery (anastomoses with left gastric artery around the midpoint of the lesser curvature).
  • Supplies the liver via left and right branches.
  • Right branch gives rise to the cystic artery for the gallbladder.

Gastroduodenal Artery

• Relations: Posterior to the first part of the duodenum.
• Branches:
  • Right Gastroepiploic Artery (supplies the greater curvature in the lower part and gives off epiploic branches).
  • Superior Pancreaticoduodenal Artery (splits into anterior and posterior branches, supplying the duodenum and pancreas).
  • Retro-duodenal artery (supplies the posterior surface of the duodenum).

Splenic Artery

• Largest branch of the celiac trunk.
• Pathway: Behind the stomach, along the superior margin of the pancreas, reaching the hilum of the spleen.
• Branches:
  • Short Gastric Arteries (supply the fundus of the stomach close to the spleen hilum).
  • Left Gastroepiploic Artery (runs along the greater curvature, anastomoses with the right gastroepiploic artery).
  • Occasionally gives off a posterior gastric artery (supplies the fundus of the stomach).

Conclusion

• These arteries ensure the stomach and associated organs are well-supplied with blood.
• Understanding these details is crucial for medical professionals dealing with gastrointestinal health.

End of Lecture

• Thank you for attending, and see you next time!