bronchus

(noun)

Either of the two airways that are the primary branches of the trachea, leading directly into the lungs.

Related Terms

Examples of bronchus in the following topics:

  • Bronchi and Subdivisions

    • A bronchus is a passage of airway in the respiratory tract that conducts air into the lungs and divides into terminal bronchioles.
    • A bronchus (plural bronchi, adjective bronchial) is a passage of airway in the respiratory tract that conducts air into the lungs.
    • The bronchus branches into smaller tubes called bronchioles.
    • The right main bronchus is wider, shorter than the left main bronchus, which is thinner and longer.
    • The right main bronchus subdivides into three lobar bronchi, while the left main bronchus divides into two.

  • Lung Cancer

    • Accounting for 25% of lung cancers, squamous cell lung carcinoma usually starts near a central bronchus.