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AQA Biology Unit 1 Chapter 4

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Sarah H-V
Created by Sarah H-V almost 11 years ago
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Biology: Lung DiseaseTuberculosisPulmonary FibrosisEmphysemaAsthmaTransmissionBacterium -MycobacteriumtuberculosisCourse of InfectionSymptomsScarring of theepithelium of the lungsIrreversibly thickenedLarger diffusion pathwayThe volume of air thelungs can contain isreducedReduces theelasticity of thelungsLack of stretch and recoilAir cannot be expulsed so lung ventilation is difficultSymptomsBreaking down of thealveoliCaused by smokingCaused by allergensAlso triggered by airpollution, exercise,cold air...What happens:SymptomsSurface area ofthe lungs isreducedElastin break downLack of stretch and recoilMore difficult to expel airSymptomsDouble click this nodeto edit the textClick and drag this buttonto create a new node