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Diseases

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Year 8 Science presentation about causes of infectious and non-infectious diseases.

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Diseases

  1. 1. Diseases<br />Year 8 Science<br />
  2. 2. What is Disease?<br />
  3. 3. Infectious or non-infectious?<br />Infectious (or contagious or communicable) diseases are caused by pathogens.<br />Non-infectious (non-contagious or non-communicable) diseases have various causes:<br /> poor nutrition<br /> smoking<br /> pollution – air, water, soil<br /> genetics – inherited diseases<br /> cancer (uncontrolled cell growth)<br /> auto-immune responses<br />
  4. 4. Nutritional Diseases<br />Scurvy – lack of Vitamin C<br />Goitre (enlarged thyroid) is caused by a lack of iodine.<br />Kwashiorkor (protein deficiency) <br />
  5. 5. Nutritional Diseases<br />Beriberi (lack of thiamine)<br />Pellagra (lack of niacin)<br />
  6. 6. Nutritional Diseases<br />Obesity causes <br />heart disease<br />diabetes II<br />high blood pressure<br />Cholesterol<br />Strokes<br />Gallstones<br />Gout<br />Osteoarthritis<br />pregnancy and bladder problems<br />Depression <br />Some cancers. <br />
  7. 7. Genetic Diseases<br />Affect the chromosomes<br />Down’s Syndrome<br />Progeria (rapid ageing)<br />
  8. 8. Cancers<br />Melanoma (skin cancer)<br />Ovarian & Breast<br />Testicular & Prostate <br />Throat and lung <br />Leukemia (blood)<br />
  9. 9. Auto-Immune Diseases<br />Lupus<br />Coeliac and Crohn’s disease<br />Eczema<br />
  10. 10. Pathogens<br />Pathogens can be microscopic or macroscopic.<br />They include:<br />Prions<br />Viruses<br />Bacteria<br />Fungi<br />Protozoans<br />Parasites (internal and external)<br />
  11. 11. Prions<br />Mad Cow Disease (Bovine Spongiform Encephalitis or BSE)<br />CreutzfeldtJakob disease<br />
  12. 12. Viruses<br />Smallpox<br />Influenza<br />Mumps<br />Measles<br />Chicken Pox<br />Ebola <br />Rubella<br />Herpes<br />
  13. 13. Bacteria<br />Diptheria<br />Tuberculosis<br />Tetanus<br />Typhoid<br />Pneumonia<br />Salmonella<br />Staphylococcus<br />
  14. 14. Fungi<br />Athlete’s foot (Tinea) <br />Ringworm<br />Aspergillosis<br />
  15. 15. Internal parasites – Protozoans and worms<br />Malaria (caused by Plasmodium)<br />Sleeping Sickness (caused by Trypanosomes)<br />Hookworm<br />Amoebic Dysentry<br />
  16. 16. External Parasites<br />Scabies<br />Lice<br />Leeches<br />Ticks<br />
  17. 17. Vectors<br />Vectors are organisms that can transmit disease by acting as a host for pathogens<br />Flies can transmit bacteria causing food poisoning.<br />Rats and mice carry fleas, which can transmit disease.<br />Mosquitoes can carry malaria, dengue fever and yellow fever. <br />
  18. 18. Your task:<br />Research: Choose a disease that you may be interested in and answer the following questions in a report about that disease:<br />Is it infectious/contagious?<br />Where does it commonly occur?<br />What are the symptoms of this disease?<br />What causes the disease?<br />Is it spread by vectors?<br />How is the disease treated?<br />How can the disease be prevented? <br />
  19. 19. Presentation<br /> You can choose one of the following methods to present your work:<br />Prepare a pamphlet or brochure that explains the disease to patients and sufferers.<br />Produce a slideshow or Voicethread about the disease (including CC images)<br />Film a role play about a patient and doctor diagnosing and treating the disease. <br />

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