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Lecture Notes - Duodenum, Pancreas, Liver, & Gallbladder
- Development
- foregut structures supplied by celiac trunk
- pancreas from dorsal (and ventral) mesentery
- liver and gallbladder from ventral mesentery
- Duodenum
- first part of small intestine
- fixed, mostly retroperitoneal C-loop, fusion fascia
- four parts:
- first (L1): no circular folds, peritoneal
- second (L1,2,3) descending: major + minor duodenal papillae
- third (L3) transverse: crossed by SMA and SMV
- fourth (L3,2) ascending: duodenojejunal flexure, suspensory
muscle of duodenum (lig. of Treitz)
- Pancreas
- retroperitoneal
- head with uncinate process, neck, body + tail
- main (+ accessory) pancreatic ducts, proximity to common bile duct
- Gallbladder and Biliary System
- neck, body and fundus of gallbladder
- right, left and common hepatic ducts, cystic duct, common bile duct
- Arteries and Veins of Duodenum and Pancreas
- from gastroduodenal a.:
- supra- and retroduodenal aa.
- ant.+post. superior pancreaticoduodenal aa.
- from SMA: ant.+post. inferior pancreticoduodenal aa.
- from splenic a.: dorsal -, great - and caudal pancreatic aa.
- anastomoses, ant. + post. arcades, vasa recta to duodenum
- venous drainage to portal vein directly or via splenic vein or SMV
- Liver
- omental (epiploic) foramen, hepatoduodenal and hepatogastric ligament
- porta hepatis: triad: common hepatic duct, portal vein, hepatic artery (var)
- falciform lig. with lig. teres, lig. venosum, coronary lig. with right and left triangular ligs., bare area
- anatomical lobes: right, left, caudate and quadrate, different from surgical (or functional) lobes
- hepatic veins
- portocaval anastomoses
- Development
- foregut structures supplied by celiac trunk
- pancreas from dorsal (and ventral) mesentery
- liver and gallbladder from ventral mesentery
- Duodenum
- first part of small intestine
- fixed, mostly retroperitoneal C-loop, fusion fascia
- four parts:
- first (L1): no circular folds, peritoneal
- second (L1,2,3) descending: major + minor duodenal papillae
- third (L3) transverse: crossed by SMA and SMV
- fourth (L3,2) ascending: duodenojejunal flexure, suspensory muscle of duodenum (lig. of Treitz)
- Pancreas
- retroperitoneal
- head with uncinate process, neck, body + tail
- main (+ accessory) pancreatic ducts, proximity to common bile duct
- Gallbladder and Biliary System
- neck, body and fundus of gallbladder
- right, left and common hepatic ducts, cystic duct, common bile duct
- Arteries and Veins of Duodenum and Pancreas
- from gastroduodenal a.:
- supra- and retroduodenal aa.
- ant.+post. superior pancreaticoduodenal aa.
- from SMA: ant.+post. inferior pancreticoduodenal aa.
- from splenic a.: dorsal -, great - and caudal pancreatic aa.
- anastomoses, ant. + post. arcades, vasa recta to duodenum
- venous drainage to portal vein directly or via splenic vein or SMV
- from gastroduodenal a.:
- Liver
- omental (epiploic) foramen, hepatoduodenal and hepatogastric ligament
- porta hepatis: triad: common hepatic duct, portal vein, hepatic artery (var)
- falciform lig. with lig. teres, lig. venosum, coronary lig. with right and left triangular ligs., bare area
- anatomical lobes: right, left, caudate and quadrate, different from surgical (or functional) lobes
- hepatic veins
- portocaval anastomoses