<prompt> Occlusion to superior mesenteric artery affects jejunum and911 -Baily Love 25thPyloric antrumFundus of stomachDuodenum distal to the opening of CBDGreater curvature  <response>: Duodenum distal to the opening of CBD 243-Snell 8th, 911-Baily Love 25thSUPERIOR MESENTERIC ARTERY - supplies the distal part of the duodenum, Jejunum, Ileum, cecum, appendix, ascending colon and most of the transverse colonIt arises from the front of the abdominal aorta just below the celiac artery and ends by anastomosing with the ileal branch of its own ileocalic branchSUPERIOR MESENTERIC SYNDROME or Wilkies syndrome Characterised by compression of the third portion of the duodenum by the superior mesenteric artery More commonly seen in young asthenic individuals with women Predisposing factor include - Weight loss, supine immobilization, scoliosis, placement of body cast cast syndrome Diagnosis - barium upper GT series or Hypotonic Duodenography Treatment of choice vascular compression of duodenum is duodeno- Jejunostomy Most common cause of Acute mesenteric ischaemia is cardiogenic embolism Most common occlusion occurs distal to origin of the superior mesenteric artery 