Pathogens and Lifestyle

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  • Pathogens and Lifestyle
    • Micro-organisms as pathogens
      • 1) Gain entry to the host
      • 2) Colonise the host tissue
      • 3) Resist the defences of the host
      • 4) Cause damage to host tissue
    • How do microogranisms get into the body?
      • Penetrating one of the organisms interfaces with the environment
        • They break skin as its thin, moist, large surface and good blood supply
      • Digestive system: food and water carry pathogens into the stomach and intestines eg. Cholera
    • PATHOGEN: A MICROORGANISM THAT CAUSES DISEASE
    • Pathogens cause disease
      • Damagins host tissue: many pathogens break doen the membranes of host cells and can prevent tissue from funcyioning properly.
      • Producing toxins: many bacterial pathogens produce toxins, such as cholera
    • RISK- A MEASURE OF THE PROBABLITLY THAT DAMAGE TO HEALTH WILL OCCUR AS REULT OF HAZARD
      • Meausure of a risk: ranges from 0% to 100%
      • Hzard risks need a timescale ie. next month
    • Lifestyle factors and cancer
      • Smoking
      • Diet
      • Obesity
      • Physical activity
      • Snlight (UV)
    • Reducing risks of cancer
      • Give up smoking
      • avoiding being overwight
      • Reduce salt in diet
      • Reduce cholesterol and saturated fat
      • Regular exercise
  • 1) Gain entry to the host
  • 3) Resist the defences of the host
  • Penetrating one of the organisms interfaces with the environment
    • They break skin as its thin, moist, large surface and good blood supply
  • Gas exchange system: pathogens enter  through this system e.g Influenza
    • How do microogranisms get into the body?
      • Digestive system: food and water carry pathogens into the stomach and intestines eg. Cholera
  • Regular exercise
  • Coronary Heart Disease
    • Pathogens and Lifestyle
      • Micro-organisms as pathogens
        • 2) Colonise the host tissue
        • 4) Cause damage to host tissue
      • PATHOGEN: A MICROORGANISM THAT CAUSES DISEASE
      • Pathogens cause disease
        • Damagins host tissue: many pathogens break doen the membranes of host cells and can prevent tissue from funcyioning properly.
        • Producing toxins: many bacterial pathogens produce toxins, such as cholera
      • RISK- A MEASURE OF THE PROBABLITLY THAT DAMAGE TO HEALTH WILL OCCUR AS REULT OF HAZARD
        • Meausure of a risk: ranges from 0% to 100%
        • Hzard risks need a timescale ie. next month
      • Lifestyle factors and cancer
        • Smoking
        • Diet
        • Obesity
        • Physical activity
        • Snlight (UV)
      • Reducing risks of cancer
        • Give up smoking
        • avoiding being overwight
        • Reduce salt in diet
        • Reduce cholesterol and saturated fat
    • Smoking
    • High blood pressure
    • High cholesterol levels
    • Obesity
    • Diet
    • Exercise

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