Topic: Food Energy and Respiration Subtopic: Diseases of the respiratory system
How does tar damage lungs?
Answer: Tar sticks on the alveoli walls making them hard and rough. When a smoker coughs, these walls breakdown reducing the surface area for the absorption of oxygen. Moreover, tar is also responsible for lung cancer.
Learn also:
- What is trachea or windpipe?
- Why are Villi essential?
- What are capillaries?
- How many times blood enters heart in one circulation?
- Does bronchi and bronchioles process air?
- What is semi-permaeable membrane?