Main Menu » Organs & Systems » Respiratory » Intrapulmonary Passageways Overview of intrapulmonary passageways Overview 1 Conducting Secondary Bronchus Secondary bronchus 1 Secondary bronchus 2 Secondary bronchus 3 Secondary bronchus 4 Secondary bronchus 6 Secondary bronchus 7 Bronchiole Bronchiole 1 Bronchiole 2 Bronchiole 3 Bronchiole 4 Bronchiole 5 Bronchiole 6 Bronchiole 7 Bronchiole 8 Bronchiole 9 Bronchiole 10 Respiratory Overview of respiratory intrapulmonary passageways Respiratory Bronchiole Respiratory Bronchiole 1 Respiratory bronchiole 2 Respiratory bronchiole 3 Respiratory bronchiole 4 Respiratory bronchiole 5 Respiratory bronchiole 6 Respiratory bronchiole 7 Alveolar Duct Alveolar duct 1 Alveolar duct 2 Alveolar duct 3 Alveolar duct 4 Alveolar duct 5 Alveolar duct 6 Alveoli Alveoli 1 Alveoli 2 Alveoli 3 Alveoli 4 Alveoli 7 Alveoli 5 Alveoli 6 Alveoli 8