Inferior Mesenteric Artery (IMA)


  • transverse colon
  • splenic flexure
  • descending colon
  • sigmoid colon and rectum
  • mesocolon partly retained in order to expose arcades
  • aorta, IMA with branches, supplying large intestine
  • right side: internal iliac artery w/ branches
  • gonadal arteries
  • retroperitoneal organs in situ
  • includes the posterior abdominal wall and part of pelvis for stability and topographic orientation