A number of different kinds of cells may be present in the epithelium. Ciliated epithelial cells are a variety that exhibit small, hairlike projections. Layers of these cells comprise ciliated epithelium tissue, which can be found in a number of locations within the body. Ciliated epithelium tissue typically lines the bronchi of the lungs, the trachea, regions of the nasal pathways, and reproductive organs of both males and females. The cilia of the tissue are provided energy by mitochondria and their movement helps transport substances, such as mucus, through these regions.