Stomach and liver. 19th century artwork of a posterior section through the upper abdomen. The stomach is at left and a section through the liver is at right. The oesophagus (gullet) joins the stomach at upper centre. At top centre is the aorta (red), the body's main artery. At top right is the vena cava (blue), the body's main vein. At bottom right and centre is the duodenum the first section of the small intestine. This anatomical artwork is plate 20 from volume 5 (1839) of 'Traite complet de l'anatomie de l'homme' (1831-1854). This 8-volume anatomy atlas was produced by the French physician and anatomist Jean-Baptiste Marc Bourgery (1797-1849). The illustrations were by Nicolas-Henri Jacob (1781-1871).