Causes Of Disease
- Created by: JazzB
- Created on: 28-01-14 18:40
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- Causes Of Disease
- Lifestyle and Health
- What is risk?
- The probability that a hazardous event will occur
- OR
- The consequence of that hazardous event
- OR
- The probability that a hazardous event will occur
- What is risk?
- Lifestyle and Health
- To be considered a pathogen a micro-organism must:
- Colonise host's tissues
- Resist host's defences
- Damage host's tissues
- Gain entry to host body
- If a pathogen colonises tissue infection occurs
- When a pathogen (and therefore disease) is passed from one host body to another it is called transmission
- Pathogens
- Causes Of Disease
- Lifestyle and Health
- What is risk?
- The probability that a hazardous event will occur
- OR
- The consequence of that hazardous event
- OR
- The probability that a hazardous event will occur
- What is risk?
- Lifestyle and Health
- To be considered a pathogen a micro-organism must:
- Colonise host's tissues
- Resist host's defences
- Damage host's tissues
- Gain entry to host body
- If a pathogen colonises tissue infection occurs
- When a pathogen (and therefore disease) is passed from one host body to another it is called transmission
- Pathogens
- Common points of pathogen entry include the gas-exchange system and the digestive system
- difficult-to-penetrate mucous barrier
- enzymes which break down pathogens
- The body's natural defences include:
- stomach acid, with a pH of 2
- The body's natural defences include:
- enzymes which break down pathogens
- If a pathogen colonises tissue infection occurs
- Common points of pathogen entry include the gas-exchange system and the digestive system
- difficult-to-penetrate mucous barrier
- enzymes which break down pathogens
- The body's natural defences include:
- stomach acid, with a pH of 2
- The body's natural defences include:
- enzymes which break down pathogens
- Causes Of Disease
- If a pathogen colonises tissue infection occurs
- Disease is when infection leads to recognisable symptoms
- Measured as a percentage; 0 % = no harm will occur, 100% = harm will certainly occur
- Risk: a measure of the probability that damage to health will occur as the result of a given hazard
- Smoking (both active and passive)
- Things that affect risk of cancer:
- Diet
- Obesity
- Activity
- Exposure to sunlight
- Things that affect risk of cancer:
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