The Immune System

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Across
  1. 2. The immunity produced by a vaccine.
  2. 3. Defense that attacks disease-causing agents.
  3. 5. When allergy causing antigens attach themselves to mast cells, the activated mast cells release chemicals known as ______.
  4. 8. A protein that is shaped like the letter Y with two antigen-binding sites.
  5. 10. Any change other than an injury that disrupts the normal functions of the body.
  6. 14. Undergoing ______ can cause nausea, hair loss, and headaches.
  7. 15. The conclusion that says infectious diseases were caused by microorganisms, or germs.
  8. 19. Elevated body temperature that slows or stops the growth of pathogens.
  9. 22. Cancerous tumors.
  10. 23. _______ are compounds that kill bacteria without harming the cells of humans or animals.
  11. 24. _______ are some of the most dangerous pathogens spread from person to person by contact.
  12. 28. Uncontrolled cell growth and division.
  13. 29. Carbohydrates, proteins, and lipids on the surfaces of viruses, bacteria, and other pathogens that trigger responses by the immune system.
Down
  1. 1. When cells of the immune system are weakened by infection.
  2. 2. When the body attacks itself it produces a(n) _______.
  3. 4. Scientists named proteins ______ because they interfere with the virus.
  4. 6. Animals that carry disease causing organisms from person to person.
  5. 7. Disease-causing agent.
  6. 9. Poisons that produce illness by disrupting bodily functions.
  7. 11. Smooth muscles contract causing the passageways in the lung to reduce in size.
  8. 12. A series of guidelines used to identify the microorganism that causes a specific disease.
  9. 13. A nonspecific reaction to tissue damage caused by injury or infection.
  10. 16. Immunity against pathogens in the body fluids.
  11. 17. Common overreactions of the immune system.
  12. 18. The Greek physician Hippocrates noted that people who survived certain diseases had acquired ______.
  13. 20. When cancerous cells move about the body.
  14. 21. When scientists create a weakened or mild form of a pathogen to produce immunity, they are creating a(n) ________.
  15. 25. Your body's most important nonspecific defense.
  16. 26. A mass of growing tissue.
  17. 27. Noncancerous tumors.