Thorax and abdomen, illustration. The pericardial sac around the heart is opened revealing the right ventricle and coronary vessels. Above, the blue vessels are the brachiocephalic veins behind which are the common carotid arteries (red). Below the reflected diaphragm is the stomach and the gastric vessels. Obscuring the deeper intestines is the greater omentum, a double fold of fat-filled peritoneum, supplied by the gastroepiploic vessels arising from the celiac trunk. From Lizars, J. 1823 A system of anatomical plates of the human body. W.H. Lizars, Edinburgh.