Main Menu » Organs & Systems » Respiratory Overview of the respiratory system Overview 1 Overview 2 Overview 3 Overview 4 Overview 5 Overview 6 Overview 7 Extrapulmonary Passages Overview of extrapulmonary passageways Overview 1 Nasal Cavity Nasal cavity 1A Nasal cavity 2A Nasal cavity 3A Nasal cavity 4A Nasal cavity 5A Larynx Larynx 1 Larynx 2 Trachea and Primary Bronchus Trachea 1A Trachea 2A Trachea 3A Trachea 4A Trachea 7A Trachea 5A Trachea 6A Intrapulmonary Passageways Overview of intrapulmonary passageways Overview 1 Conducting Secondary Bronchus Secondary bronchus 1 Secondary bronchus 3 Secondary bronchus 2 Secondary bronchus 4 Secondary bronchus 6 Secondary bronchus 5 Secondary bronchus 7 Bronchiole Bronchiole 1A Bronchiole 2A Bronchiole 3A Bronchiole 4A Bronchiole 5A Bronchiole 6AA Bronchiole 7A Bronchiole 8A Respiratory Overview of respiratory intrapulmonary passageways Respiratory Bronchiole Respiratory bronchiole 1 Respiratory bronchiole 8 Respiratory bronchiole 4 Respiratory bronchiole 9 Respiratory bronchiole 10 Respiratory bronchiole 11 Alveolar Duct Alveolar duct 1A Alveolar duct 2A Alveolar duct 3A Alveolar duct 4A Alveolar duct 5A Alveolar duct 8A Alveolar duct 6A Alveolar duct 7A Alveoli Alveoli 1 Alveoli 2 Alveoli 4 Alveolus 9 Alveoli 3 Alveoli 7 Alveoli 5 Alveoli 8 Blood Supply Overview of blood supply Overview (blood supply) 1 Bronchial Blood Vessels Bronchial blood vessels 1A Bronchial blood vessels 2A Bronchial blood vessels 3A Bronchial blood vessels 4A Pulmonary Artery Pulmonary artery 1A Pulmonary artery 2A Pulmonary artery 3A Pulmonary artery 4A Pulmonary Capillaries Pulmonary capillaries 1A Pulmonary capillaries 2A Pulmonary Vein Pulmonary vein 1A Pulmonary vein 2A Pulmonary vein 3A Pleura Pleura 1A Pleura 2A