You have two apples, you pick one off the tree, drop it, than drop two more. How many apples do you have George?
During an asthma attack the muscle wall contracts and the lining of the airways becomes swollen and inflamed. These changes cause a narrowing of the airways which is further aggravated by an increase in secretions from the mucus membrane, which may actually block the smaller airways hope this helps
E all of the above. For sure