Which type of cell is responsible for secreting mucus in the respiratory system?

Goblet cells are specialized epithelial cells primarily responsible for the secretion of mucus in the respiratory system. These cells have a unique goblet shape, which allows them to store and produce mucus efficiently. The mucus serves several important functions, such as trapping dust, pathogens, and other foreign particles, thereby keeping the airways clear and protecting the underlying tissues from irritation and infection. In addition, the mucus helps to moisten the air entering the lungs.

Goblet cells are found in various parts of the respiratory tract, including the trachea and bronchi, where their role in maintaining respiratory health is crucial. Their secretion is stimulated by various factors, such as irritants and inflammation, which can increase mucus production as a protective response. This makes goblet cells integral to the function of the respiratory epithelium in maintaining a clean and healthy respiratory environment.