existence ends during fully formed stage anatomical system respiratory system AAO:0000541 Atmungssystem BTO:0000203 CALOHA:TS-1319 EFO:0000804 EHDAA2:0001604 EHDAA:2203 EMAPA:16727 EV:0100036 FMA:7158 Functional system which consists of structures involved in respiration. GAID:78 MA:0000327 MAT:0000030 MESH:D012137 MIAA:0000030 OpenCyc:Mx4rvVjzFJwpEbGdrcN5Y29ycA TAO:0000272 The anatomical system in which the exchange of oxygen and carbon dioxide between the organism and its environment.[AAO] There is no doubt that the primitive pattern of vertebrate air-breathing is the buccal pulse pump found in actinopterygian fishes.[well established][VHOG] UBERON:0001004 UMLS:C0035237 VHOG:0000202 XAO:0000117 ZFA:0000272 apparatus respiratorius apparatus respiratorius respiratory system systema respiratorium uberon