Question: What is Chronic Cough?
Answer: A cough is considered to be chronic when it lasts longer than 2-3 weeks.
What Happens When You Cough
When nerves, called cough receptors, in the airways are aggravated by a respiratory irritants, the brain sends a signal to the respiratory system. This causes the lungs to expand and deeply inhale. The closed glottis causes a the pressure within the lungs to increase. When the glottis opens, the air within the lungs is forced out through the respiratory tract, expelling any mucus, particles or objects within the airways. (Read more about the respiratory system)
Source: pulmonarychannel.com
Published: 03/07/06