Not Now. Established in 1989, the Clearwater Volunteer Fire Department serves the Clearwater (Tennessee) community and surrounding area with support. 1,185 people like this and 1,166 people follow this.
Pathologic changes in chronic obstructive pulmonary disease (COPD) occur in the large (central) airways, the small (peripheral) bronchioles, and the lung parenchyma. Most cases of COPD are the result of exposure to noxious stimuli, most often cigarette smoke.
Asthma affects the body by limiting the flow of air into the lungs. When certain substances trigger an asthma attack, cholinergic receptors in the airways respond by tightening the muscles.This process is called bronchoconstriction.It triggers a sequence of reactions in the body, which contributes to increased inflammation and mucus secretions.An asthma attack -- or an asthma exacerbation -- can be very frightening. You may cough, have difficulty breathing, or feel a shortness of breath.his process is called bronchoconstriction. It triggers a sequence of reactions in the body, which contributes to increased inflammation and mucus secretions. An asthma attack -- or an asthma exacerbation -- can be very frightening. You may cough, have difficulty breathing, or feel a shortness of breath.