Disease 2


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Disease 2

  1. 1. Disease “ He himself bore our sins in his body on the tree, so that we might die to sins and live for righteousness; by his wounds you have been healed ” 1 Peter 2:24
  2. 2. At the end of this lecture you will be able to… <ul><li>Identify some diseases </li></ul><ul><li>Identify and describe the FACE of disease </li></ul><ul><li>Classify disease into 2 categories </li></ul><ul><li>Begin to identify some responses of the body to infection </li></ul>
  3. 3. Checkpoint 1: Disease <ul><li>What makes a disease a disease? </li></ul><ul><li>What are some diseases? </li></ul>
  4. 4. What is disease? <ul><li>Disease is a condition that </li></ul><ul><ul><li>Function impaired </li></ul></ul><ul><ul><li>A series of recognizable symptoms </li></ul></ul><ul><ul><li>Cause known </li></ul></ul><ul><ul><li>Evaluation for identification </li></ul></ul>
  5. 7. Types of disease <ul><li>Non-infectious diseases </li></ul><ul><ul><li>Genetic or hereditary e.g. hemophilia </li></ul></ul><ul><ul><li>Congenital e.g. fetal alcohol syndrome </li></ul></ul><ul><ul><li>Environmental e.g. anemia </li></ul></ul><ul><ul><li>Not transmitted by a microorganism </li></ul></ul><ul><ul><li>Not contagious </li></ul></ul>
  6. 8. Hemophilia <ul><li>People are missing the protein that makes their blood clot </li></ul><ul><li>Bruises become hematomas </li></ul><ul><li>Cuts can be life threatening </li></ul>
  7. 9. Anemia <ul><li>Lack of iron in the diet causes reduction in red blood cells </li></ul><ul><li>Tiredness, shortness of breath, heart failure </li></ul>
  8. 10. Checkpoint 2 <ul><li>What are two types of non-infectious diseases? What causes them? </li></ul><ul><li>Describe the impact of non infectious disease on our society? </li></ul>
  9. 11. Types of disease con’t ….. <ul><li>Infectious diseases </li></ul><ul><ul><li>Bacterial e.g. cholera </li></ul></ul><ul><ul><li>Viral e.g. chicken pox </li></ul></ul><ul><ul><li>Fungal e.g. tinnea </li></ul></ul><ul><ul><li>Parasitic e.g. malaria </li></ul></ul><ul><ul><li>Transmitted by a microorganism </li></ul></ul><ul><ul><li>Contagious </li></ul></ul>
  10. 12. Chicken Pox <ul><li>Spots that become blisters </li></ul><ul><li>Blisters contain fluid </li></ul><ul><li>Blisters become itchy scabs </li></ul>
  11. 13. Cholera <ul><li>Intestinal infection </li></ul><ul><li>Diarrhea and severe dehydration </li></ul><ul><li>Transmitted through contaminated water or food </li></ul>
  12. 14. Checkpoint 3: Disease <ul><li>What is an example of an infectious disease? What are some of the symptoms of this disease? </li></ul><ul><li>Describe an infectious disease that you have suffered from? </li></ul>
  13. 15. Pathogens <ul><li>Not all microorganisms cause disease </li></ul><ul><ul><li>Yeast: yoghurt </li></ul></ul><ul><ul><li>Micro flora: healthy skin </li></ul></ul><ul><li>Pathogens are microorganisms which cause disease </li></ul>
  14. 16. How are pathogens transmitted? <ul><li>In the air </li></ul><ul><li>In water </li></ul><ul><li>In food </li></ul><ul><li>In body fluids e.g. saliva </li></ul><ul><li>By touching </li></ul><ul><li>By another organism e.g. mosquito </li></ul><ul><li>These transmitters are called vectors </li></ul>
  15. 17. How do pathogens make us sick? <ul><li>Bacteria produce poisons that kill our cells </li></ul><ul><li>Viruses use our cells to reproduce and then the cell dies </li></ul><ul><li>Fungi grow and produce toxins </li></ul><ul><li>Parasites live and grow in our body destroying tissue </li></ul>
  16. 18. Checkpoint 4: Pathogens <ul><li>Name a pathogen that you are familiar with. What are its effects? </li></ul><ul><li>Describe your journey as a pathogen. </li></ul>
  17. 19. Virus Reproduction
  18. 20. Parasite Activity <ul><li>Mosquito Attack </li></ul><ul><li>Blood cell penetration </li></ul><ul><li>Parasite Release </li></ul>
  19. 21. Body Response <ul><li>First line of defense </li></ul><ul><ul><li>Physical barriers eg skin </li></ul></ul><ul><li>Second line of defense </li></ul><ul><ul><li>Cell attack </li></ul></ul><ul><li>Third line of defense </li></ul><ul><ul><li>immunity </li></ul></ul>
  20. 22. Stop the Spread of Disease! <ul><li>Preventing Infection </li></ul><ul><li>Stopping the spread </li></ul>