[The structural-functional changes in the epithelium of the respiratory area of the nose and intrapulmonary bronchi in human ontogeny].

The epithelia of nasal respiratory area and intrapulmonary bronchi were studied in human ontogenesis by means of light and electron microscopy. The results indicate the stageness of morphofunctional organization of epithelia of the organs studied. The succession of the respiratory tract epithelium cytodifferentiation, dynamics of correlation between the epithelial layer cell elements in ontogenesis and peculiarities of ultrastructural organization of the nasal mucosa epithelial cell were established.