Describe the duodenum
A c shaped tube around the head of the pancreas
Where does the first 2cm of the duodenum lie? What about the rest of the duodenum?
The first two cm of the duodenum lies between the greater and lesser sacs. The rest of the duodenum is retroperitoneal
Describe the length and course of the superior first part of the duodenum
2 inches, Runs to the right and backwards/posterior
Describe the length and course of the descending second part of the duodenum
3 inches, To the right of L2, the second part of the duodenum curves downwards over the hilum of the right kidney
Describe the relations of the second part of the duodenum
D2 curves over the hilum of the right kidney. The bile duct lies at the posteromedial wall. D2 lies in both supra and infracolic compartments
Describe the length, course, and relations of the horizontal third part of the duodenum
4 inches, runs from right to left across L3. Lies on the aorta at the commencement of the IMA, and is crossed by the SMA. Lies in both left and right infracolic compartments.
Describe the length and course of the ascending fourth part of the duodenum
1 inch, to the left of L2 ascends to the left of the aorta and on the left psoas which fixes the Dj flexure
Name the four parts of the duodenum
D1 1st superior, D2 2nd descending, D3 3rd horizontal, D4 4th ascending parts
Describe the lining of the duodenum
The duodenum’s internal mucous membrane is thrown into numerous circular folds
Name the duodenal recessed and their locations
Superior and inferior duodenal recesses locations??
Paraduodenal recess, formed from the IMV
What is the blood supply of the duodenal artery?
From the superior and inferior pancreaticoduodenal arteries which arise from xxxx
The first 2cm of the duodenum may receive blood supply from which arteries?
Common hepatic, gastroduodenal, superior pancreaticoduodenal, right gastric, right gastroepiploic
What is the lymphatic drainage of the duodenum?
The lymphatic drainage of the duodenum is via channels accomanying the superior and inferior pancreaticoduodenal arteries to the coeliac trunk and SMA nodes
