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.
Review Date:
5/7/2007
Reviewed By:
Harvey Simon, M.D., Editor-in-Chief, Associate Professor of Medicine, Harvard Medical School; Physician, Massachusetts General Hospital.
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