Ciliated columnar epithelium is found mainly in respiratory tract as well as in fallopian tube. In the respiratory tract, it is found in tracheal and bronchial regions of the pulmonary system. As the name implies, it has a hair-like projections called cilia. Together with cilia, it also contain many goblet cells that produced mucus to form a mucosal layer superficial to the epithelial layer. The cilia also helps in propelling mucus away from the lungs and to prevent foreign particles that might cause infections.

Epiglottis is a flap of elastic cartilage found in the throat behind the tongue and in front of the larynx. At rest, the epiglottis is usually up right allowing air to pass into the larynx and lungs. It is letting the person to breathe. When you are swallowing, the epiglottis folds backward to prevent the entrance of food and liquid in the windpipe and lungs.

Aside from the end of the bones as articular cartilage, hyaline cartilage are also found in the nose, trachea, larynx and bronchi. Hyaline cartilage provide structural support in respiratory system. The linings of trachea are held open by cartilaginous rings of hyaline cartilage.

Sources; https://bio.davidson.edu/people/kabernd/BerndCV/Lab/EpithelialInfoWeb/CiliatedColumnarEpithelium.html https://medlineplus.gov/ency/imagepages/19595.htm https://www.britannica.com/science/hyaline-cartilage https://histologyguide.com//slideview/MH-136-trachea/05-slide-1.html