Unit 1: Lung Disease - Emphysema

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  • Created by: rosieevie
  • Created on: 16-05-14 10:23
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  • Emphysema
    • Causes
      • Smoking or long-term exposure to air pollution
      • Phagocytes attracted to inflammation and produce enzyme that breaks down elastin
      • Surface area of alveoli reduced and they sometimes burst
      • Alveoli walls thicken increasing diffusion pathway
    • Symptoms
      • Shortness of breath
        • Difficulty exhaling air due to loss of elasticity of the lungs = lack of oxygen
        • Smaller surface area = reduced blood oxygen levels
          • Oxygen supply attempted to be increased by rapid breathing
      • Chronic cough
        • Body's effort to remove damaged tissue and mucus
      • Blue skin colouration
        • Low levels of oxygen from poor gas diffusion in lungs


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