Alveolar Epithelial Cells

Alveolar-epithelial-cells: line the alveoli of the lung, including the squamous alveolar cells, the great alveolar cells, and the alveolar macrophages. There are two types of epithelial cells in the lungs that line the alveoli. Type I cells are thin squamous epithelial cells, and Type II cells secrete pulmonary surfactant.