176. Lumbar Region of Back: Cross Section 249. Anterior Abdominal Wall: Internal View 257. Femoral Sheath and Inguinal Canal 259. Arteries of Posterior Abdominal Wall 260. Veins of Posterior Abdominal Wall 267. Omental Bursa: Cross Section 268. Peritoneum of Posterior Abdominal Wall 271. Duodenum in Situ 281. Pancreas in Situ