How are mucus and cilia different?

Mucus and cilia are both important components of the respiratory system but serve different functions. Mucus is a thick, sticky substance produced by mucous membranes that traps dust, pathogens, and other particles, helping to keep the airways clear. Cilia, on the other hand, are tiny hair-like structures that line the respiratory tract and move in a coordinated manner to sweep mucus and trapped particles out of the airways toward the throat for removal. Together, they work to protect the respiratory system from infection and irritation.