part of part of develops_from embryo embryonic structure endoderm-derived structure pharyngeal arch 1 lingual swellings EHDAA2:0000996 EMAPA:17186 Most adult amphibians have a tongue, as do all known reptiles, birds and mammals. Thus it is likely that the tongue appeared with the establishment of tetrapods and this structure seems to be related, to some extant, to the terrestrial lifestyle.[well established][VHOG] Primordium of the tongue; the median swelling and the distal and proximal swellings arise from the ventral aspect of the stomodeum. [TFD][VHOG] UBERON:0006260 VHOG:0000449 lingual swelling the collection consisting of the two lateral swellings and the medial swelling uberon future tongue protuberance structure with developmental contribution from neural crest