Midgut
,Duodenum
• Retroperitoneal organ (covered with
S
parietal peritoneum)
D
• 4 parts: T
A
Superior at L1
Descending at L2/L3 (contains the major
duodenal papilla - end of the foregut and start
of the midgut)
Transverse at L3
Ascending at L2 Midgut part
, Both parts contai
circulares which a
Transverse and ascending part inside of the lume
increase the SA fo
absorption
• Transverse: • Ascending:
• Longest section • Passes upwards on the abdom
• Crosses: aorta to upper border of L2
Inferior vena cava • Terminates at duodenojejunal
Abdominal aorta flexure
Vertebral column • Duodenojejunal flexure is
• Crossed anteriorly by superior surrounded by a fold of
mesenteric artery and vein peritoneum containing muscle
fibres called the suspensory
ligament of duodenum (Ligame
of Treitz)
,Duodenum
• Retroperitoneal organ (covered with
S
parietal peritoneum)
D
• 4 parts: T
A
Superior at L1
Descending at L2/L3 (contains the major
duodenal papilla - end of the foregut and start
of the midgut)
Transverse at L3
Ascending at L2 Midgut part
, Both parts contai
circulares which a
Transverse and ascending part inside of the lume
increase the SA fo
absorption
• Transverse: • Ascending:
• Longest section • Passes upwards on the abdom
• Crosses: aorta to upper border of L2
Inferior vena cava • Terminates at duodenojejunal
Abdominal aorta flexure
Vertebral column • Duodenojejunal flexure is
• Crossed anteriorly by superior surrounded by a fold of
mesenteric artery and vein peritoneum containing muscle
fibres called the suspensory
ligament of duodenum (Ligame
of Treitz)
