Title: Scheme of peripheral lung parenchym
Scheme peripheral lung, human.
(1) respiratory bronchiolus
(2) alveolar duct
(3) alveolar sac is a virtual sac formed by several alveoli, but continuous with the alveolar duct
(4) alveoli which end in small tips (↓) with elastin interwoven with collagen.
Title: Bronchiolus and alveoli in lung
Stain hematoxylin-eosin, adult human. (1) indicates a bronchiolus with respiratory epithelium and muscle fibers in its wall.
Alveolar spaces (2) are separated by alveolar cell types that lined thin septa with capillaries. The septa end in tips and knobs (3).
Keywords/Mesh: respiratory tract, lung, alveolar duct, atrium, alveoli. bronchiolus, alveolar septa, alveolar cell type, pneumocyte, histology, POJA collection