air sac

(redirected from alveolar 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 ?
Idiopathic pulmonary fibrosis (IPF) is a progressive, fatal lung disease in which fibrous tissue replaces the alveolar sacs through which we breathe.