Asthma is a chronic disease that includes
broncho-constriction (tightening of the
muscles around the airways) and
inflammation (swelling) of the bronchial
tubes. During normal breathing, air flows
freely in and out of the lungs.
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rooted
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Joined: 22 Mar 2007 Posts: 567
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Posted: 03-05-08 04:39am
What causes the constriction of the
respiratory tract? Can stress do this?