Asthma may occur in both children and adults. The air passages get narrower, which greatly limits the movement of air into the lungs. Salbutamol is a drug that widens the air passages and eases the symptoms of asthma. In what way does salbutamol relieve the symptoms of asthma?
- AIt decreases mucus secretions in the terminal bronchioles.
- BIt decreases the surface area of the alveoli.
- CIt causes recoil of elastic tissue in the bronchioles.
- DIt relaxes smooth muscle in the bronchi and bronchioles.