Plate 11.223 Ciliated Pseudostratified Columnar Epithelium
Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Paul M. Heidger,
Jr., Ph.D.
Peer Review Status: Externally Peer Reviewed
Human, Helly's fluid, periodic acid-Schiff and hematoxylin stain, 1416 x.
Goblet cell: Mucin-secreting, non-ciliated columnar cell. The secretion of these cells collects inhaled particulate materials.
Ciliated cells: Tall columnar cells with central nucleus; form the ciliated pseudostratified epithelium of the trachea. Cilia extend into the lumen of the trachea and sweep particulate material away on a carpet of mucus from the respiratory alveoli and out of the respiratory tree.
Basement membrane: Unusually thick and prominent. Composed of reticular fibers and protein polysaccharides. The apparent thickness of the basement membrane in this location is attributed to closely applied elastic fibers.
Lamina propria: Thin, fibrous layer with abundant elastic fibers.
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