air sac

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Related to alveolar sac: Alveolar ducts
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  • noun

Synonyms for air sac

a tiny sac for holding air in the lungs

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any of the thin-walled extensions of the tracheae of insects

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any of the membranous air-filled extensions of the lungs of birds

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References in periodicals archive ?
4D) can be found in the proximities of the alveolar sacs of the two species of Amazonian cetaceans, a fact that resembles the study of Crespo & Lauria De Cidre (2005), who showed the presence of myoelastic sphincter distributed near the alveolar sacs of the lungs of Pontoporia blainvillei.
This alveolar surface area accounts for only surface area of the airways (alveolar ducts) and not the alveolar sacs, and thus is a low estimate of the actual alveolar surface area.
the terminal bronchioles, alveolar ducts, and alveolar sacs.
These lead into alveolar sacs resembling bunches of grapes.
2] or so of exposed tissue in Susan's alveolar sacs.