part of part of has part has part foregut midgut digestive tract foregut-midgut junction Although all vertebrates have a digestive tract and accessory glands, various parts of this system are not necessarily homologous, analogous, or even present in all species. Therefore, broad comparisons can be best made under the listings of headgut, foregut, midgut, pancreas and biliary system, hindgut.[well established][VHOG] An anatomical junctions that overlaps the foregut and midgut. EHDAA2:0000569 EHDAA:526 EMAPA:16363 UBERON:0006235 VHOG:0000291 uberon anatomical junction