Smoking and diseases

Question 1

Why is smoke harmful to the lungs and respiratory passages

Answer 1

1) It is hot
2) It has a drying effect
3) It contains many harmful chemicals

Question 2

What causes you to be addicted to smoking

Answer 2

Nicotine

Question 3

Suggest three harmful effects of smoking other than damage to the lungs and breathing passages

Answer 3

1) Increased blood pressure
2) Damage to heart
3) Bladder cancer

Question 4

What in tobacco causes cancer

Answer 4

Tar

Question 5

What in tobacco reduces oxygen supply

Answer 5

Carbon monoxide

Question 6

What happens when the walls of the air sacs are destroyed

Answer 6

Emphysema

Question 7

How does emphysema occur

Answer 7

The walls break down resulting in less surface area for gas exchange and breathing becomes very difficult

Question 8

How does smoke harm the lungs

Answer 8

1) Particles trigger the action of phagocytes and mucus secreting cells so more mucus is produced.
2) Dries out the lining of the lungs
3) Chemicals may trigger extra cell division and start growth of tumors.

Question 9

Why are smokers more likely to develop and infection

Answer 9

Cilia are lost and so cannot remove bacteria trapped in mucus.