Biology 40.2

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Biology 40.2

  1. 1. 40.2 The Immune System<br />
  2. 2. Immunity<br />Ability of the body to resist a specific pathogen.<br />
  3. 3. Inflammatory Response<br />Nonspecific defense reaction to tissue damage caused by injury or infection.<br />
  4. 4. Fever<br />Elevated body temperature that occurs in response to infection.<br />
  5. 5. Interferon<br />One of a group of proteins that helps cells resist viral infection.<br />
  6. 6. Immune Response <br />The body’s specific defenses that attack a disease-causing agent.<br />
  7. 7. Antigen<br />Substance that triggers an immune response.<br />
  8. 8. Humoral Immunity<br />Immunity against antigens and pathogens in the body fluids.<br />
  9. 9. Cell-Mediated Immunity<br />Immunity against abnormal cells and pathogens inside living cells.<br />
  10. 10. Antibody<br />Protein that helps destroy pathogens.<br />
  11. 11. Vaccination<br />Injection of a weakened or mild form of a pathogen to produce immunity.<br />
  12. 12. Active Immunity <br />Immunity produced by exposure to an antigen, as a result of the immune response.<br />
  13. 13. Passive Immunity<br />Short-term immunity caused when antibodies produced by other animals for a pathogen are injected into the body.<br />
  14. 14. Key Concept<br />The function of the immune system is to fight infection through the production of cells that inactivate foreign substances or cells.<br />
  15. 15. Key Concept<br />Your body’s most important nonspecific defense is the skin.<br />
  16. 16. Key Concept<br />The inflammatory response is a nonspecific defense reaction to tissue damage caused by injury or infection. <br />

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