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Bronchus

(Science: anatomy chest medicine) Any of the larger air passages of the lungs, having an outer fibrous coat with irregularly placed plates of hyaline cartilage, an interlacing network of smooth muscle and a mucous membrane of columnar ciliated epithelial cells.

Origin: L., gr. Bronchos = windpipe Either of the two main branches of the trachea.The main pathway that connects the lungs to the trachea.