Pseudostratified Columnar Epithelium is a type of tissue found in various parts of the body, primarily in the respiratory tract. It appears to be layered due to the varying heights of its cells, but all cells are attached to the same base membrane, making it a single layer. This unique structure allows for efficient secretion and movement of mucus. The primary function of Pseudostratified Columnar Epithelium is to trap and transport particles out of the airways. It contains specialized cells called goblet cells that produce mucus, which helps to keep the respiratory passages moist and free from pathogens.