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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
 
In most cases, cervicofacial subcutaneous emphysema occurs when air ascends from a pneumomediastinum in one of three ways: as a result of (1) dissection along fascial planes from either the neck or retroperitoneum, (2) perforation of the trachea, bronchus, or esophagus, or (3) alveolar rupture and the migration of air through the interstitium.
Spontaneous facial subcutaneous emphysema by Carr, Michele M. / Ear, Nose and Throat Journal
Bronchoscopy demonstrated a large black and gray plaque in the left mainstem bronchus (Figure 2) and multiple smaller gray and black deposits in the left upper lobe, left lower lobe, and right lower lobe.
Case report: a case of wood-smoke-related pulmonary disease by Balmes, John R. / Environmental Health Perspectives
4ml/kg (25ml in adults) into the right bronchus in one experiment in only one monkey.
Fasting: how long is too long? by Tudor, Glynis / Australian Nursing Journal
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