al·ve·o·lar sac

1. terminal dilation of the alveolar ducts, which give rise to alveoli in the lung; a small air chamber in the pulmonary tissue from which the pulmonary alveoli project like bays and into which an alveolar duct opens; Synonym(s): sacculus alveolaris [TA]

2. in birds, air-containing extensions of bronchi that connect with bone cavities.

Synonym(s): air sac

Farlex Partner Medical Dictionary © Farlex 2012

al·ve·o·lar sac

(al-vē'ŏ-lăr sak)

Terminal dilation of the alveolar ducts that give rise to alveoli in the lung; a small air chamber in the pulmonary tissue from which the pulmonary alveoli project like bays and into which an alveolar duct opens.
Synonym(s): sacculus alveolaris [TA] .

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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References in periodicals archive

Another important finding in the present study is that histopathological analysis demonstrated significant reduction in the number of alveolar sacs and notably elevated crowded score in the lung parenchyma of hypoxia-treated animals compared to those in the sham controls.

Reducing TRPC1 expression through liposome-mediated siRNA delivery markedly attenuates hypoxia-induced pulmonary arterial hypertension in a murine model

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