The Trachea is NOT part of the Respiratory Zone of the respiratory system.
1. The Respiratory Zone consists of structures where gas exchange occurs, such as the Alveoli, Alveolar ducts, and Bronchioles.
2. The Trachea is a part of the conducting zone of the respiratory system, responsible for transporting air to and from the lungs. It is not involved in the actual exchange of oxygen and carbon dioxide in the alveoli.
