Main Menu » Organs & Systems » Respiratory » Intrapulmonary Passageways » 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