Linked from
The 8 pages that link to Bronchoconstriction, each with the reason it gives.
AsthmaRelated: This rapid narrowing contributes directly to episodic breathlessness and wheezing.
Smooth muscleRelated: Airway smooth muscle regulates airflow and can constrict during asthma.
BronchospasmRelated: It names the muscle-driven narrowing at the center of bronchospasm.
Respiratory diseaseRelated: It can sharply restrict airflow during an asthma episode.