The respiratory mucosa is a specialized tissue lining the airways in the respiratory system. It consists of a layer of epithelial cells and an underlying connective tissue layer, which helps to trap dust, pathogens, and other particles. This mucosa plays a crucial role in protecting the lungs and maintaining clear air passages. In addition to its protective function, the respiratory mucosa is also involved in the process of humidifying and warming the air we breathe. It contains mucus-secreting glands and cilia, which work together to move trapped particles out of the airways, ensuring that the air reaching the lungs is clean and moist.