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Mind Map
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Sarah H-V
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more than 1 year ago
AQA Biology Unit 1 Chapter 4
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aqa
biology
a-levels
as levels
lungs
disease
emphysema
pulmonary fibrosis
tuberculosis
asthma
biology
a levels
Created by
Sarah H-V
almost 11 years ago
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897594
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2017-01-20T12:03:41Z
Biology: Lung Disease
Tuberculosis
Pulmonary Fibrosis
Emphysema
Asthma
Transmission
Bacterium -
Mycobacterium
tuberculosis
Course of Infection
Symptoms
Scarring of the
epithelium of the lungs
Irreversibly thickened
Larger diffusion pathway
The volume of air the
lungs can contain is
reduced
Reduces the
elasticity of the
lungs
Lack of stretch and recoil
Air cannot be expulsed so lung ventilation is difficult
Symptoms
Breaking down of the
alveoli
Caused by smoking
Caused by allergens
Also triggered by air
pollution, exercise,
cold air...
What happens:
Symptoms
Surface area of
the lungs is
reduced
Elastin break down
Lack of stretch and recoil
More difficult to expel air
Symptoms
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897594
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2017-01-20T12:03:41Z
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