has part has part has_part develops from contributes to morphology of lung bud pair of lungs respiration organ respiratory system lung SCTID:181216001 MAT:0000135 UBERON:0002048 EHDAA2:0001042 galen:Lung MA:0000415 EMAPA:16728 Snakes and limbless lizards typically possess only the right lung as a major respiratory organ; the left lung is greatly reduced, or even absent. Amphisbaenians, however, have the opposite arrangement, with a major left lung, and a reduced or absent right lung [WP] GAID:345 NCIT:C12468 MIAA:0000135 Wikipedia:Lung Respiration organ that develops as an outpocketing of the esophagus. AAO:0000275 FMA:7195 CALOHA:TS-0568 XAO:0000119 BTO:0000763 EV:0100042 EFO:0000934 AAO:0010567 EHDAA:2205 MESH:D008168 EHDAA:1554 bronchus thoracic cavity element lateral structure