Airway smooth muscle cells

Airway smooth muscle cells are specialized cells located in the walls of the respiratory airways, like the tubes that carry air into your lungs. They control the diameter of these airways by contracting or relaxing, which affects breathing. When these muscles tighten, the airways narrow, making it harder to breathe—common in conditions like asthma. Conversely, relaxation widens the airways, easing airflow. These cells respond to signals from the nervous system and other factors, playing a crucial role in regulating airflow, airway responsiveness, and overall respiratory health.