Cilia, which are hair-like projections that transport microorganisms and detritus up and out of the airways line the bronchus in the lungs.
Goblet cells are found throughout the cilia and secrete mucus, which helps to preserve the bronchus lining and trap bacteria.
They are present on a variety of single-celled eukaryotes and are designed for moving cells through their surrounding fluid, food uptake, and environmental sensing.
The epithelial cells of several internal organs, such as the lungs, trachea, and digestive system, have motile cilia.