Pneumocytes (pneumonocyte or alveolar cells) are one of the cells lining the alveoli (or air sac) of lung. Two types of pneumocytes exist: Type I and type II pneumocyte. ...
Synonym: alveolar cell. ... Origin: pneumo-+ G. Kytos, cell ... (05 Mar 2000) ... 
(noo-mo-sīt´) alveolar cell.
Type: Term Pronunciation: nū′mō-sīt Synonyms: alveolar cell
Pneumocyte: One of the cells lining the alveoli (the air sacs) in the lung. The alveoli are, in fact, lined with two types of cells termed the type 1 and type 2 pneumocytes: Type 1 pneumocyte: The cell responsible for the gas (oxygen and carbon dioxide) exchange that takes place in the alveoli. It is a very large thin cell stretched over a very lar...