alveolus

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alveolus

(ălvē`ələs): see lungslungs,
elastic organs used for breathing in vertebrate animals, excluding most fish, which use gills, and a few amphibian species that respire through the skin. The word is sometimes applied to the respiratory apparatus of lower animals.
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alveolus

[al′vē·ə·ləs]
(anatomy)
A tiny air sac of the lung.
A tooth socket.
A sac of a compound gland.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

alveolus

1. any small pit, cavity, or saclike dilation, such as a honeycomb cell
2. any of the sockets in which the roots of the teeth are embedded
3. any of the tiny air sacs in the lungs at the end of the bronchioles, through which oxygen is taken into the blood
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
In vivo pulmonary alveoli have complicated morphology as revealed by histology and microscopy studies [49, 56-58], which appear as a polyhedral complex with varying-sized alveoli grouped in a fractal form [59].
Youssef, 38, explained more about his condition with a tweet saying, "When one gets pneumonia, pulmonary alveoli are filled with liquid substances which makes breathing painful and limits oxygen intake."
Administration of vitamin B12 by inhalation resulted in a rapid increase in serum vitamin B12 levels, indicating that the vitamin was absorbed through pulmonary alveoli. However, pulmonary damage could result from this route of administration, since pulmonary fibrosis has occurred in dogs exposed to prolonged inhalation of cobalt.

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