Respiratory epithelium is a specialized type of tissue that lines the airways in the respiratory system. It plays a crucial role in protecting the lungs by trapping dust, pathogens, and other particles that we inhale. This tissue is primarily made up of ciliated cells, which have tiny hair-like structures that help move mucus and debris out of the airways, keeping them clear and clean. In addition to ciliated cells, respiratory epithelium contains goblet cells that produce mucus. This mucus acts as a sticky barrier, capturing unwanted particles and microorganisms. Together, these features ensure that the air we breathe is as clean as possible before it reaches the delicate tissues of the lungs.