part of part_of develops from midgut 中肠 pancreatic epithelial bud 胰腺上皮芽 dorsal pancreatic bud 背侧胰芽 dorsal pancreas anlage dorsal pancreatic anlage pancreas dorsal primordium duct bud pancreas primordium dorsal bud pancreatic bud that gives rise to the accessory pancreatic duct. posterior pancreatic anlage posterior pancreatic bud primary pancreatic bud 产生辅助胰管的胰芽。 原发性胰腺芽 后胰腺原基 后胰腺芽 背胰原基(dorsal pancreas anlage) 背胰原基(dorsal pancreatic anlage) 胰原基背芽 胰背原基导管芽 pancreas dorsal primordium 胰背原基