smoking

Question 1

reduces oxygen carrying capacity of red

Answer 1

carbon monoxide combines more readily to haemoglobin than oxygen

Question 2

damage to the alveoli

Answer 2

since their walls break down and join together forming larger air spaces than normal - reduces the efficiency of gaseous exchange and increases risk of developing chronic obstructive pulmonary disease

Question 3

damage to cilia

Answer 3

causes a build up of excess mucus in lung passages leading to smokers cough to try and get rid of the mucus

Question 4

swelling and narrowing of the lungs

Answer 4

reduces lung function and increases breathlessness