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Lung Diseases.

Lung Disease and Smoking

- Nicotine in cigarettes affects the lungs by:
o Causing the bronchioles in the lungs to constrict ­ this reduces the air
flow in and out of the lungs
o Paralysing cilia which are meant to remove the dirt and bacteria from
the trachea…

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Emphysema and Bronchitis

- Emphysema is caused by a breakdown
of the thin walls of the alveoli,
decreasing the total surface area for
gas exchange
o Symptoms inc. Chronic breathlessness, coughing, wheezing and a
reduction in the tolerance for exercise
- Bronchitis is an inflammation in the linings of the…


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