terminal bronchioles
exchange gases with the blood
No, the alveolar ducts are not part of the conducting zone. They are part of the respiratory zone, which includes structures involved in gas exchange. The conducting zone consists of the airways that filter, warm, and humidify the air, including the nasal passages, trachea, and bronchi, leading up to the terminal bronchioles. Alveolar ducts and alveoli are where oxygen and carbon dioxide exchange occurs.
Elongation
The respiratory zone refers to the part of the respiratory system where gas exchange occurs, primarily in the alveoli of the lungs. In contrast, the conducting zone includes the structures that transport air to the respiratory zone, such as the nasal cavity, pharynx, trachea, and bronchi, but does not participate in gas exchange. Essentially, the conducting zone serves to filter, warm, and moisten the air, while the respiratory zone facilitates the actual exchange of oxygen and carbon dioxide between the air and blood.
The smallest and most distal structures that remain a part of the conducting zone in the respiratory tract are the terminal bronchioles. These bronchioles are the final branches of the conducting airways before reaching the respiratory zone where gas exchange occurs in the alveoli.
Nasopharynx, larynx, trachea, bronchi and bronchinles.
Stratified Squamous
zone of cell division-zone of elongation-zone of maturation
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