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]

AAO:0000275

EHDAA:2205

VHOG:0000310

EHDAA:1554

MESH:D008168

EV:0100042

OpenCyc:Mx4rvVjKy5wpEbGdrcN5Y29ycA

MA:0000415

EHDAA2:0001042

FMA:7195

MIAA:0000135

galen:Lung

BTO:0000763

MAT:0000135

AAO:0010567

CALOHA:TS-0568

GAID:345

UMLS:C0024109

XAO:0000119

EMAPA:16728

EFO:0000934

Respiration organ that develops as an oupocketing of the esophagus.

Either of two organs which allow gas exchange absorbing oxygen from inhaled air and releasing carbon dioxide with exhaled air.[AAO]

pulmo

uberon

pulmonary

Lungs had already developed as paired ventral pockets from the intestine in the ancestor of Osteognathostomata. (...) In actinopterygian fishes, apart from Cladistia, the ventral intestinal pocket migrates dorsally and becomes the swim-bladder, a mainly hydrostatical organ (reference 1); Comparative transcriptome analyses indicate molecular homology of zebrafish swimbladder and Mammalian lung (reference 2).[well established][VHOG]

UBERON:0002048

lung

UBERON:0002048

lung

respiration organ in all air-breathing animals, including most tetrapods, a few fish and a few snails. In mammals and the more complex life forms, the two lungs are located in the chest on either side of the heart. Their principal function is to transport oxygen from the atmosphere into the bloodstream, and to release carbon dioxide from the bloodstream into the atmosphere. This exchange of gases is accomplished in the mosaic of specialized cells that form millions of tiny, exceptionally thin-walled air sacs called alveoli. // Avian lungs do not have alveoli as mammalian lungs do, they have Faveolar lungs. They contain millions of tiny passages known as para-bronchi, connected at both ends by the dorsobronchi