268. Peritoneum of Posterior Abdominal Wall 271. Duodenum in Situ 273. Ileocecal Region 278. Liver in Situ: Vascular and Duct Systems 279. Liver Structure: Schema 281. Pancreas in Situ 284. Arteries of Liver, Pancreas, Duodenum, and Spleen 285. Celiac Arteriogram and CT Angiogram 286. Arteries of Duodenum and Head of Pancreas