What are the functions of the respiratory conduction zone?

The respiratory conduction zone serves several key functions: it provides a pathway for air to travel from the external environment to the lungs, helps to warm and humidify incoming air, and filters out particulates and pathogens through mucous and cilia. This zone includes structures such as the nasal cavity, pharynx, larynx, trachea, and bronchi. By performing these functions, the conduction zone ensures that the air reaching the alveoli is clean, warm, and moist, which is essential for optimal gas exchange.