What is the air passage?
Nose → trachea → 2 main branches → their branches → bronchioles → terminal bronchioles → respiratory bronchioles → alveolar ducts → alveoli
How many times does the airways divide between the trachea and alveoli?
23 times
What do the first 16 divisions form
Conducting zone of the airways that will transport gases and perform air conditioning function
What do the remaining 7 divisions form?
Respiratory zone where gas exchange takes place with blood and alveoli