T9

Question 1

Lung disease

Answer 1

1. Chronic obstructive pulmonary disease (COPD; chronic bronchitis and emphysema)
2. Lung cancer

Question 2

Symptoms of chronic bronchitis

Answer 2

1. Severe cough

2. Difficulty breathing

Question 3

Symptoms of emphysema

Answer 3

1. Wheezing

2. Breathlessness

Question 4

Symptoms of lung cancer

Answer 4

1. Coughing up blood
2. Chest pain
3. Difficulty breathing

Question 5

Tobacco smoke

Answer 5

1. Tar
2. Nicotine
3. Carbon monoxide

Question 6

Tar

Answer 6

1. A carcinogen
2. Mixture of compounds that settle on lining airways in lungs and stimulate a series of changes that leads to obstructive lung disease and lung cancer

Question 7

Nicotine

Answer 7

1. The drug in tobacco ; addictive
2. Absorbed very readily by blood, travels to brain within seconds
3. Stimulates nervous system to reduce diameter of arterioles & to release adrenaline from adrenal glands
4. Heart rate & blood pressure increase, with decrease in blood supply to the extremities, reducing oxygen supply
5. Increases risk of blood clotting

Question 8

Carbon monoxide

Answer 8

1. Forms irreversible carboxyhaemoglobin; reduces chances of oxygen to bind with haemoglobin
2. CO damages lining of arteries, leads to build up of fatty tissue & reduction of blood flow; result to CHD/stroke