Final answer:
The conducting zone of the respiratory system does not exchange gases; its functions include air passage, humidification, warming, debris removal, mucus secretion, and lung protection.
Step-by-step explanation:
The function that is NOT a part of the conducting zone of the respiratory system is C: Exchanging gases between the respiratory system and the blood. The conducting zone is responsible for the passage of air to the respiratory zone, while gas exchange takes place in the respiratory zone. The conducting zone functions include humidifying the air, warming the inhaled air to body temperature, removing debris and pathogens, secreting mucus, and protecting the lungs from inhaled particles. These roles are crucial in preparing the air before it reaches the area where gas exchange occurs, ensuring that the delicate tissues are protected.