Fig. 26-3 Horizontal sections through the abdomen. In A, the liver, right and left kidneys (R.K., L.K.), pancreas (P.), spleen (Sp.), and stomach (St.) are shown, as well as the aorta (Ao.) and splenic artery, inferior vena cava (I.V.C.), portal vein (P. V.), bile duct, and hepatic artery. The greater sac of the peritoneal cavity (around the liver, for example) can be traced through the epiploic foramen (arrow) into the lesser sac between the stomach and pancreas. L. V., lumbar vertebra. (After Symington.) B represents the principle of the arrangement of the peritoneum and its mesenteries. Click for high resolution image.