Duodenum, Pancreas, Portal Vein

Gross Anatomy


Duodenum, Pancreas and Hepatic Portal Vein


Anatomy Tables for Today's Topic

Arteries of the Pancreas and Duodenum
Veins
Viscera

Arteries of the Pancreas and Duodenum - Alphabetical

Artery Source Branches Supply to Notes
celiac trunk abdominal aorta at the level of the T12-L1 intervertebral disc left gastric a., splenic a., common hepatic a. stomach, lower esophagus, liver, upper duodenum, pancreas, spleen celiac trunk supplies the foregut derivatives
pancreatic, caudal splenic a. numerous small aa. that supply the pancreas tail of the pancreas caudal pancreatic a. enters the tail of the pancreas near the hilum of the spleen; it may arise from the left gastro-omental a.
pancreatic, dorsal splenic a. right br., left br. neck of the pancreas right br.of the dorsal pancreatic a. anastomoses with the anterior superior pancreaticoduodenal a. in the prepancreatic arcade
pancreatic, inferior dorsal pancreatic, left br. no named branches lower part of the body of the pancreas inferior pancreatic a. may be imbedded in the substance of the gland
pancreatic, superior splenic a. no named branches superior part of the body of the pancreas superior pancreatic aa. are multiple small brs. arising from the splenic a.
pancreatica magna splenic a. numerous unnamed brs. within the pancreas body of the pancreas pancreatic magna is the largest pancreatic branch to arise from the splenic a.; it enters the pancreas at the junction of its middle 1/3 and left 1/3
pancreaticoduodenal, anterior inferior inferior pancreaticoduodenal a. pancreatic brs., duodenal brs. lower duodenum and head of the pancreas anterior inferior pancreaticoduodenal a. anastomoses with the anterior superior pancreaticoduodenal a. to form the anterior pancreatic arcade
pancreaticoduodenal, anterior superior gastroduodenal a. pancreatic brs., duodenal brs. upper duodenum and head of the pancreas anterior superior pancreaticoduodenal a. anastomoses with the anterior inferior pancreaticoduodenal a. to form the anterior pancreatic arcade
pancreaticoduodenal, inferior superior mesenteric a. anterior inferior pancreaticoduodenal a., posterior inferior pancreaticoduodenal a. lower duodenum, head of the pancreas inferior pancreaticoduodenal a. supplies both the anterior and posterior surfaces of the lower duodenum and lower part of the head of the pancreas
pancreaticoduodenal, posterior inferior inferior pancreaticoduodenal a. pancreatic brs., duodenal brs. lower duodenum and head of the pancreas posterior inferior pancreaticoduodenal a. anastomoses with the posterior superior pancreaticoduodenal a. to form the posterior pancreatic arcade
pancreaticoduodenal, posterior superior gastroduodenal a. pancreatic brs., duodenal brs. upper duodenum and head of the pancreas posterior superior pancreaticoduodenal a. anastomoses with the posterior inferior pancreaticoduodenal a. to form the posterior pancreatic arcade
mesenteric, superior abdominal aorta at the level of the lower 1/3 of the L1 vertebral body inferior pancreaticoduodenal a., middle colic a., jejunal a., ileal a., right colic a., ileocolic a. inferior part of the head of the pancreas, distal duodenum, jejunum, ileum, cecum, appendix, ascending colon, transverse colon superior mesenteric a. supplies the midgut derivatives; brs. of the superior mesenteric a. participate in formation of the marginal artery

Veins

Vein Tributaries Drains Into Regions Drained Notes
portal v. formed by the union of the superior mesenteric v. and the splenic v.; tributaries: posterior superior pancreaticoduodenal v., right gastric v., left gastric v. divides into right and left branches before entering the liver; into the liver sinusoids all of the gut and its glands portal v. connects with the vena caval drainage at 1) esophagus, 2) rectum, 3) umbilicus, 4) retroperitoneal gut structures; portal v. courses between two capillary beds (gut and liver)
right gastric v. gastric brs. portal v. lesser curvature of the stomach the left gastric v. and right gastric v. are together called the coronary v. because they form a circle
left gastric v. esophageal vv.; gastric brs. portal v. lesser curvature of the stomach, lower part of the esophagus left gastric v. communicates with the esophageal vv., forming a portal-caval venous anastomosis (esophageal varices when enlarged); the left gastric v. and right gastric v. are together called the coronary v. because they form a circle


Viscera

Organ/Part of Organ Location/Description Notes
duodenojejunal junction part of the small intestine where the duodenum is continuous with the jejunum duodenojejunal junction is located in the left upper quadrant; it is suspended by the suspensory muscle (ligament) of the duodenum; the inferior mesenteric v. passes to left side of the duodenojejunal junction
duodenum proximal segment of the small intestine C-shaped; the duodenum has 4 parts: 1st or superior, 2nd or descending, 3rd or transverse, 4th or ascending
hepatopancreatic ampulla union of the common bile duct and the main pancreatic duct hepatopancreatic ampulla opens onto the greater duodenal papilla in the 2nd part of the duodenum
pancreas exocrine and endocrine gland located posterior to the stomach on the posterior abdominal wall retroperitoneal; pancreas functions as a digestive and an endocrine (insulin production) gland; main pancreatic duct drains the exocrine secretions of the tail, body and lower part of the head to the greater duodenal papilla within the 2nd part of the duodenum; accessory pancreatic duct drains the exocrine secretions of the upper body and part of the head to the lesser duodenal papilla
pancreas, body of part of the pancreas between the head and tail body of pancreas stretches to the left from the neck of the pancreas; splenic a. lies on the superior border of the body; splenic v. lies posterior to the body
pancreas, head of part of the pancreas located to the right, within the curvature of the duodenum the pancreatic arterial arcades are formed on the anterior and posterior surfaces of the head of the pancreas
pancreas, neck of the junction between the head and the body of the pancreas the neck of the pancreas is a constricted region to the left of the head; superior mesenteric a. arises from the abdominal aorta posterior to the neck of the pancreas
pancreas, tail of part of the pancreas that forms the tapered left end of the organ tail of the pancreas extends into the splenorenal (lienorenal) ligament toward the hilum of the spleen
pancreas, uncinate process of lowest part of the head of the pancreas the uncinate process lies posterior to the superior mesenteric vessels
pancreatic duct, accessory drains part of the head of the pancreas accessory pancreatic ducts opens onto the lesser duodenal papilla
pancreatic duct, main drains the tail, body and part of the head of the pancreas main pancreatic duct unites with the common bile duct at the hepatopancreatic ampulla; it drains onto the greater duodenal papilla


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Some of the material presented in these tables is contained in the book:
MedCharts Anatomy by Thomas R. Gest and Jaye Schlesinger
Published by ILOC, Inc., New York. Copyright 1995.

Content of these tables has been edited for use in this course by Patrick W. Tank, Ph.D.
Copyright 2005, Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences.

Unauthorized use is prohibited.