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terminal saccular period of lung development

 

Definition: the period when many terminal saccules develop; their epithelium is thin and capillaries bridge into the epithelial lining of the saccules, permitting adequate gas exchange for survival of the fetus if it is born prematurely.

Synonym(s): terminal sac period

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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