Ciliated columnar epithelium is a type of tissue composed of tall, column-shaped cells that have tiny hair-like structures called cilia on their surface. This epithelium is primarily found in the respiratory tract, where it plays a crucial role in moving mucus and trapped particles out of the airways, helping to keep the lungs clear of debris and pathogens. In addition to the respiratory system, ciliated columnar epithelium is also present in the fallopian tubes of the female reproductive system. Here, the cilia help to transport the egg from the ovary toward the uterus, facilitating reproduction. This specialized tissue is essential for maintaining proper function in these systems.