Pseudostratified columnar epithelial tissue with cilia is located in the linings of the

Pseudostratified columnar epithelial tissue with cilia is located in the linings of the trachea as well as the upper respiratory tract. The presence of pseudostratified columnar epithelium with cilia in the upper respiratory tract protects the lungs from the effects of large dust particles, pollutants, corrosive agents and pathogens as the goblet cells of the epithelium secrete mucus to trap these particles and prevent them from traveling further down respiratory passages.