Fighting Dieases

• Preventing Disease '

  
  

  - Hygienic

  - Destroying vectors

  - Isolating infected organisms

  - Vaccination
• The skin is a barrier to pathogens.
• Hair and mucus trap particles with pathogens.
• Trachea and Bronchi secrete mucus to trap pathogens. The cillia pass mucus to the back of the throat to be swallowed.
• Stomach produces hydrochloric acid to kill pathogens.
• White blood cells engulfs pathogens and digest them. This is Phagocytosis
• Vaccinations protect from future infections.
• Vaccinations are injected with small amount of pathogens. The body produces antibodies to attack.
• CONS Of vaccination

  
  

  - Side Effects

  - Dont always work.
• Ways White Blood(Lymphocytes) cells fight disease

  
  

  1. Produce anti toxins to neutralise toxins pathogens produce when they enter the body

  2. Phagocytosis - Phagoctyes change chape to to engulf pathogen

  3. Antibodes bind to antigens so Phagoctyes can break them down.