respiratory tract

Last reviewed 01/2018

The respiratory tract is the complete set of structures which make up the respiratory system. It can be divided into:

  • conducting portion:
    • oral cavity
    • nasal cavities
    • pharynx
    • larynx
    • trachea
    • bronchi
    • terminal bronchioles
  • respiratory portion:
    • respiratory bronchioles
    • alveolar ducts
    • alveolar sacs
    • alveoli