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Normal versus asthmatic bronchiole

During an asthma attack, smooth muscles located in the bronchioles of the lung constrict and decrease the flow of air in the airways. Inflammation or excess mucus secretion can further decrease the amount of air flow.

Reviewed last on: 5/21/2009
Allen J. Blaivas, DO, Division of Pulmonary and Critical Care, UMDNJ-New Jersey Medical School, Newark, NJ. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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