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Air sac — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Air_sac
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-07T21:57:49.834Z
SHA-256 of the archived text: 847d64db6cb2422b833bb0728b2756d7d18d042e8468942d4efe37b43f09392c
Stable URL of this page: https://metraipolis.com/documento/dc_bcbb196c068e

How to cite

Air sac — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Air_sac (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_bcbb196c068e (Metraipolis archive dc_bcbb196c068e, sha256 847d64db6cb2422b833bb0728b2756d7d18d042e8468942d4efe37b43f09392c)

BibTeX

@misc{dcbcbb196c068e,
  title = {Air sac — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Air_sac},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_bcbb196c068e; sha256 847d64db6cb2422b833bb0728b2756d7d18d042e8468942d4efe37b43f09392c},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Air_sac. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Air sacs are spaces within an organism where there is the constant presence of air. Among modern animals, birds possess the most air sacs (9–11), with their extinct dinosaurian relatives showing a great increase in the pneumatization (presence of air) in their bones. Birds use air sacs for respiration as well as a number of other things. Theropods, like Aerosteon, have many air sacs in the body that are not just in bones, and they can be identified as the more primitive form of modern bird airways. Sauropods are well known for the large number of air pockets in their bones (especially vertebra), although one theropod, Deinocheirus, shows a rivalling number of air pockets.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (deposito sistematico; retro-catalogo: tutte le voci di Wikipedia in inglese, in ordine alfabetico).
Fonte: Wikipedia in inglese, voce «Air sac» — https://en.wikipedia.org/wiki/Air_sac
Wikidata Q519093: «organo respiratorio» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q519093
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Air_sac?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1384027425, consultata il 2026-11-07T21:53:42.412Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 43159c230d52f7608fd85719d48de7587928764a2c1de93ad86c1fe676da61e9