Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Problem:Passage: Functionally, the respiratory system can be divided into a conducting zone and a respiratory zone. The conducting zone of the respiratory system includes the organs and structures not directly involved in gas exchange. The gas exchange occurs in the respiratory zone. Answer: gas exchange
Solution:
The conducting zone of the respiratory system includes the organs and structures not directly involved in what?