Guide Questions: 1. How many harmful chemicals inhaled when smoking cigarette?
2. What happens to the bronchial tube when we inhaled harmful chemicals?
3. What happens if the cilia cannot push out all the excess mucus?
4. What will be the result if the body attempts to clear the clogged mucus? 5. What happens when the air sacs are damaged?
6. According to the comic, what are the diseases that can be acquired when the proper functioning of the respiratory system is interrupted with smoking?

1. More than 7,000 chemicals in tobacco smoke, at least 250 are known to be harmful, including hydrogen cyanide, carbon monoxide, and ammonia (1, 2, 5). Among the 250 known harmful chemicals in tobacco smoke, at least 69 can cause cancer.

2 It can trigger an allergic response that leads to inflammation and, in some cases, scarring in and around the tiny air sacs (alveoli) and bronchioles of the lung

3 If there is a problem with either the mucus or the cilia, the airways may become blocked and the harmful germs and particles can be trapped in the lungs, causing damage.

4 You shouldn't attemps to clear the mucus by yourself because it might cause infection and irratation.

5 In emphysema, the inner walls of the lungs' air sacs are damaged, causing them to eventually rupture. This creates one larger air space instead of many small ones and reduces the surface area available for gas exchange. Emphysema is a lung condition that causes shortness of breath