alveolar cell


Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia, Wikipedia.

al·ve·o·lar cell

any of the cells lining the alveoli of the lung, including the squamous alveolar cells, the great alveolar cells, and the alveolar macrophages.
Synonym(s): pneumocyte

alveolar cell

A nonspecific term for any cell native to the pulmonary alveoli—e.g., type-I and type-II pneumocytes and alveolar macrophages.

al·ve·o·lar cell

(al-vē'ŏ-lăr sel)
Any of the cells lining the alveoli of the lung, including the squamous alveolar cells, the great alveolar cells, and the alveolar macrophages.

alveolar cell

1. In the lung, either of two types of epithelial cells lining the alveoli. Type I cells are simple thin squamous epithelial cells. Type II cells secrete pulmonary surfactant. Type II cells are smaller and more numerous than Type I cells.
2. In the mammary glands, the milk-secreting epithelial cells, which are activated during lactation.
See also: cell
References in periodicals archive ?
In this instance, University of Minnesota researchers were able to turn the MLPC into type II alveolar cells, which was confirmed by the presence of a definitive type II alveolar cell marker Co surfactant protein C (SPC).
Type II alveolar cells also can turn into type I alveolar cells, which form the thin, blood-gas barrier through which gas exchange occurs during respiration.
19] This term has been used extensively but has not been defined in terms of quantitative criteria, although it has been reported that type II pneumocytes account for 10% of the alveolar cell population in normal lung tissue obtained under ideal conditions of fixation and preparation.
A positive result by light microscopy was granular to diffuse red staining on the apical surface of epithelial cells in trachea, bronchi, and bronchioles and on alveolar cells.
Differentiation of MSCs into epithelial type II cells may partially restore the stem cell pool, leading to increased genesis of alveolar cells for the resolution of disrupted alveolar surfaces, thereby augmenting the repair process.