Small intestine. 19th century artworks of the duodenum, the first section of the small intestine. At top is a frontal view, with the corresponding rear view at bottom. Nerves are white, arteries are red and veins are blue. The globular structures are lymph tissue. The yellow structure at bottom right is the gallbladder, which drains into the duodenum via the bile duct (yellow tube). The bile duct is shown in more detail at right and left. This anatomical artwork is plate 24 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).