Bronchus Apr 2026

Lined with ciliated pseudostratified columnar epithelium and goblet cells that produce mucus to trap dust and pathogens. Physiological Functions

These supply each lobe of the lung (three on the right, two on the left). bronchus

Involuntarily controlled muscle that regulates airflow by contracting (bronchoconstriction) or relaxing (bronchodilation). bronchus

Further divisions that supply specific bronchopulmonary segments. Histological Layers: bronchus

The "mucociliary escalator" uses rhythmic ciliary motion to push mucus and trapped particles upward toward the pharynx for clearance.