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bronchus

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bronchus

One of a pair of large tubes (bronchi) branching off from the windpipe (trachea) and passing into the vertebrate lung. Apart from their size, bronchi differ from the bronchioles in possessing cartilaginous rings, which give rigidity and prevent collapse during breathing movements.

Numerous glands in the wall of the bronchus secrete a slimy mucus, which traps dust and other particles; the mucus is constantly being propelled upwards to the mouth by thousands of tiny hairs or cilia. The bronchus is adversely effected by several respiratory diseases and by smoking, which damages the cilia and therefore the lung-cleansing mechanism.



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? Mentioned in ? References in periodicals archive
 
The bronchus divides into smaller air passages known as bronchioles.
incidence rates of the most common cancers per 100,000 people, by race All White Black Asian/Pacific Hispanic Men Islander Prostate 158 150 236 85 135 Lung and bronchus 87 87 107 52 51 Colon and rectum 61 61 69 46 52 Women Breast 124 126 112 82 91 Lung and bronchus 55 57 51 27 27 Colon and rectum 45 44 52 34 36 SOURCE, BOTH: AHMEDIN JEMAL ET AL.
Surgeon Professor Paolo Macchiarini attached the new bronchus to Claudia's lung.
 
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