Pathogens, lifestyle and disease
- Created by: emma
- Created on: 17-04-14 15:01
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- Pathogens, lifestyle and disease
- Disease
- Causes
- Infectious- caused by pathogens
- Non infectious- from lifestyle or genetics
- Pathogen
- An organism/ micro-organism that causes disease
- Can release toxins or cause direct damage to cell
- Fungi, bacteria, virus
- Definition
- A malfunction of part or the whole of the body with a characteristic set of symptoms
- Routes of infection
- Lining of digestive system
- Breaks in skin
- Urinary and reproductive system
- Gas exchange system
- Always in contact with the environment
- Large surface area
- Thin exchange surface
- Causes
- Risk factor
- Factors that increase your chance of developing a disease
- Cancer
- Carcinogenic chemicals
- Ionising radiation
- Heart disease
- Lack of exercise/ stress- high blood pressure, damage to endothelium wall
- Smoking- increases toxins in blood, damage to epithelium wall
- High cholesterol/ lipid diet- increase cholesterol level, increase in lipid uptake
- Correlation and cause
- Correlation shows that there is a relationship between two variables but might not be a causal one
- Causal link
- A change in one variable leads to a change in another variable
- CORRELATION DOES NOT MEAN CAUSE
- Disease
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