Final answer:
The mucous membrane of the respiratory tract is made up of epithelial tissue, featuring cilia and goblet cells that work together to protect the respiratory system.
Step-by-step explanation:
The mucous membrane of the respiratory tract is composed of epithelial tissue and is ciliated in most portions of the conducting zone. The lining, known as the pseudostratified ciliated columnar epithelium, features cells with cilia on their apical surface. These cilia are responsible for moving mucus and trapped particles out of the respiratory tract, which is vital for protecting the respiratory system from invasive microorganisms and other inhaled harmful materials. Additionally, goblet cells interspersed between the epithelial cells produce mucus that traps irritants to keep the lungs clear.