Histologic constituents of bronchi and bronchioli. The mucosa of bronchi, as in the trachea, consists of go there an epithelium (ciliated pseudostratified columnar with goblet cells), a basement membrane, and a lamina propria. Goblet cells in bronchi and bronchioli are less numerous than in the trachea. They are usually filled with mucous secretory droplets, which are discharged into the 10mg prednisone doseing cialis online 40mg lumen where they form a mucous blanket on the epithelial surface.