| It thins mucus in air passages and makes it easier to cough up mucus and clear airways, allowing easier breathing. |
| A cough is a reflex action to clear the airways of mucus, phlegm, irritants or a foreign body. |
| Infiltration of the large and small airways with eosinophils, neutrophils, plasma cells, and lymphocytes is common. |
| Normally, lung mast cells occur around blood vessels, large airways, and nerves. |
| From the nose and mouth, air passes into the trachea and into each lung, through two airways called the bronchi. |
| They reduce inflammation in your airways and prevent blood vessels from leaking fluid into your airway tissues. |
