Duodenum Flashcards
First and shortest part of the small intestine
10 in (25 cm)
widest and fixed part
C shaped
DUODENUM
Only mobile portion of the duodenum
5 cm; L1
1st/superior part
7-10 cm
bile duct and main pancreatic duct unite to form the ampulla that opens on major duodenal papillae
2nd/ descending part
6-8 cm
crosses L3
3rd/horizontal part
5 cm
duodenojejunal flexure is held in position by the suspensory ligament of the duodenum/LIGAMENT OF TREITS which is attached to the R crus of the diaphragm
4th/ ascending part
Blood supply of 1st part of duodenum
Gastroduodenal artery
Blood supply of proximal portion of duodenum + superior part of head of pancreas
gastroduodenal a – SUPERIOR PANCREATICODUODENAL ARTERY
Blood supply of distal portion of duodenum + head of pancreas
SMA – INFERIOR PANCREATICODUODENAL ARTERY