Bronchoconstriction is the constriction of the airways in the lungs due to the tightening of surrounding smooth muscle, with consequent coughing, wheezing, and shortness of breath. ==Physiology== 1. Bronchoconstriction is due to an activation of parasympathetic nervous system. Postganglionic parasympathetic fibers will release acetylcholine (ACh) ...
the act or process of decreasing the calibre of a bronchus; bronchostenosis.
<chest medicine, physiology> The act or process of decreasing the calibre of a bronchus, bronchostenosis. ... (18 Nov 1997) ... 
(bron″ko-kәn-strik´shәn) narrowing of a bronchus as a result of smooth muscle contraction, as in asthma.
Type: Term Pronunciation: brong′kō-kon-strik′shŭn Definitions: 1. Reduction in the caliber of a bronchus or bronchi, usually referring to a dynamic process as in asthma and emphysema, rather than a fixed constriction (the latter is a bronchial stenosis).
Narrowing of the larger airways.