bronchus

Physiology

(noun)

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

Related Terms

  • bronchoconstriction
  • bronchopulmonary segment
  • tertiary bronchi
Biology

(noun)

either of two airways, which are primary branches of the trachea, leading directly into the lungs

Related Terms

  • alveolus
  • bifurcate

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.
  • Mammalian Systems and Protective Mechanisms

    • Each bronchus divides into secondary, then into tertiary bronchi, which further divide to create smaller diameter bronchioles that split and spread through the lung.
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