Zusammenfassung der Ressource
Causes of disease
- Infectious diseases
- Epidemics
- widespread outbreaks of disease
- Pandemics
- epidemics that spread internationally
- Pathogen
- Virus
- Bacteria
- Fungi
- Initial infection
- Pathogens enter the body
- Gas exchange system
- Digestive system
- Natural defences
- Mucous layer covers
exchange surfaces
- Enzyme production
- Stomach acid
- Pathogens affect body in 2 ways
- Damaging host tissues
- Producing toxins
- Risk factors of cancer
- Smoking
- Diet
- Obesity
- Physical activity
- Sunlight
- Risk factors of CHD
- Smoking
- High blood pressure
- Blood cholesterol levels
- Obesity
- Diet
- Physical activity