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What smoking does:
Smoking can lead to several types of problems, specifically lung cancer, chronic bronchitis
and emphysema. Chronic bronchitis and emphysema are generalised a chronic obstructive
pulmonary disorder (COPD).
The main chemicals that contribute to these are tar, carbon monoxide and nicotine.

Tar damages the cilia in the trachea,…

Page 2

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LDLs and cholesterol are deposited under endothelium or in artery wall. (This narrows the
lumen)
Calcium ions may also be deposited, making the plaque hard. Now blood might clot on the
surface, decreasing the lumen size further.

CHD:
Damage to the coronary artery that narrows its lumen and therefore reduces…

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