271. Duodenum in Situ 272. Mucosa and Musculature of Duodenum 281. Pancreas in Situ 284. Arteries of Liver, Pancreas, Duodenum, and Spleen 286. Arteries of Duodenum and Head of Pancreas 293. Lymph Vessels and Nodes of Stomach 294. Lymph Vessels and Nodes of Pancreas 310. Renal Artery and Vein in Situ 311. Gross Structure of Kidney