Schematic representation of the MucilAirâ„¢ pseudostrati ed respiratory ... porous membrane with culture medium on the basal side and air on the apical side. The goblet cells secrete mucin ...
The trachea has a number of adaptations: cartilage rings in the walls of the trachea help to keep it open ciliated epithelium and goblet cells to clean ... the lungs. Cilia are small hairs which ...