Branches of Celiac trunk, Superior and Inferior mesenteric arteries and veins

Celiac trunk (T12)

Mnemonic: LHS (Left Hand Side)
Supplies Foregut (Upto opening of bile duct in 2nd part of duodenum)

1. Left gastric artery

• Esophageal branches
• Gastric branches

2. Hepatic artery (common)

• Gastroduodenal artery
  • Supraduodenal artery
  • Superior pancreaticoduodenal artery
  • Right gastro-epiploic artery
• Hepatic artery proper
  • Right gastric artery
  • Left hepatic artery
  • Right hepatic artery
    • Cystic artery

3. Splenic artery

• Splenic branches
• Pancreatic branches (body and tail)
• Short gastric branches
• Left gastro-epiploic artery

Superior Mesenteric Artery (L1)

Mnemonic: IMRIS
Supplies Midgut (Upto proximal 2/3 of transverse colon)

1. Inferior pancreaticoduodenal artery

2. Middle colic artery

3. Right colic artery

4. Ileo-colic artery

5. Small intestinal branches (Ileal and Jejunal)

Inferior Mesenteric Artery (L3)

Mnemonic: LeSS
Supplies Hindgut (Upto anal canal above pectinate line)

1. Left colic artery

2. Sigmoidal artery

3. Superior rectal artery

Collateral pathways:

The collateral pathways of the mesenteric arterial circulation include the pancreatico–duodenal arcade, arc of Riolan, arc of Buhler, arc of Barkow, and the marginal artery of Drummond.

1. Kirk’s arcade: Dorsal pancreatic artery + Inferior pancreatico-duodenal arteries
2. Arc of Buhler: Celiac artery + Superior mesenteric artery
3. Arc of Barkow: Left gastroepiploic artery + Right gastroepiploic artery
4. Arc of Riolan: Superior mesenteric artery (middle colic artery) + Inferior mesenteric artery
5. Marginal artery of Drummond: Terminal branches of SMA + Terminal branches of IMA

Critical points:

1. Sudeck’s critical point (rectosigmoid junction): At the point of origin of last sigmoidal arterial branch from IMA
2. Griffith’s critical point (splenic flexure): At the site of watershed anastomosis between ascending left colic artery and marginal artery of Drummond

Venous counterparts

Arteries	Venous counterpart	Tributaries	Drains into
Celiac artery	Splenic vein	Short gastric vein Left gastro-epiploic vein Pancreatic vein Inferior mesenteric vein	Portal vein
Superior mesenteric artery	Superior mesenteric vein	Right gastro-epiploic vein Inferior pancreaticoduodenal veins Jejunal vein Ileal vein Ileocolic vein Right colic vein Middle colic vein	Portal vein
Inferior mesenteric artery	Inferior mesenteric vein	Superior rectal vein Sigmoidal vein Left colic vein	Splenic vein

Portal Vein : Tributaries and Portocaval Anastomoses