part of develops from ends during starts during archenteron liver diverticulum xenopus_anatomy An out-pocket of thickened ventral foregut epithelium adjacent to the developing heart. Its anterior portion gives rise to the liver and intrahepatic biliary tree, while the posterior portion forms the gall bladder, hepato-pancreatic duct, hepato-pancreatic progenitor cells and the bile duct. UBERON:0008835 XAO:0000101 foregut embryonic structure foregut endoderm NF stage 14 NF stage 40