What is the purpose of the mucociliary escalator mechanism?

The mucociliary escalator mechanism is a defense system in the respiratory tract that helps clear mucus, pathogens, and foreign particles from the airways. It consists of ciliated epithelial cells that line the respiratory passages, which move in coordinated waves to propel mucus upwards toward the throat. This process facilitates the removal of inhaled irritants and microorganisms, helping to protect the lungs from infection and maintain respiratory health. Ultimately, it plays a critical role in keeping the airway clear and functioning properly.