During an asthma attack, smooth muscles located in the bronchioles
of the lung contract, narrowing the airways and decreasing the flow
of air. Inflammation or excess mucus secretion can further decrease
the amount of air flow.
Review Date: 06/01/2010
Reviewed By: Harvey Simon, MD, Editor-in-Chief, Associate Professor of Medicine,
Harvard Medical School; Physician, Massachusetts General Hospital.
A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)
