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Knowledge
Diseases impair normal body functions and can arise from numerous factors such as pathogens, genetic defects, and environmental conditions. Understanding the types and causes of diseases, particularly infectious and non-infectious diseases, is critical. Prevention strategies include maintaining hygiene, proper nutrition, vaccination, and managing exposure to vectors.
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References
b9-16.pdfClass Notes
Memorization
What we have learnt
- Diseases can be caused by p...
- Infectious diseases are cau...
- Preventive measures such as...
Final Test
Revision Tests
What we have learnt
- Diseases can be caused by pathogens, genetic factors, and environmental influences.
- Infectious diseases are caused by pathogens while non-infectious diseases are not.
- Preventive measures such as personal hygiene, vaccinations, and awareness of environmental hazards help reduce the incidence of diseases.
Key Concepts
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Term: Pathogens
Definition: Microorganisms like bacteria, viruses, fungi, and protozoa that cause infectious diseases.
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Term: Genetic Factors
Definition: Inherited genetic defects or mutations that can lead to diseases such as sickle cell anemia.
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Term: Immunity
Definition: The body's ability to resist infections, often enhanced through vaccinations.
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Term: Infectious Diseases
Definition: Diseases caused by infectious agents that can spread from person to person.
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Term: Noninfectious Diseases
Definition: Diseases that are not caused by pathogens and cannot be transmitted, such as cancer and diabetes.