A cystic fibrosis vest is a therapeutic tool. When worn, it provides compressions similar to manual chest percussions. Wearing the vest can help loosen sticky secretions so that a person can more ...

The body produces mucus, also known as phlegm or sputum, to protect sensitive tissues in the airways. Changes in the sputum color, thickness, or quantity of phlegm may indicate a health problem, such ...

Phlegm is a form of respiratory mucus produced by the lungs. The airways between the larynx and the respiratory bronchioles are lined by columnar epithelium over which an airway surface liquid (ASL) ...