EXAM III NAME_______________
DIRECTIONS: Answer each question in the space
(4 pt) 1. Describe these terms, using specific
oligodynamic - coins leak small amounts of metal that inhibit bacteria.
(2 pt) 2. Which organism(s) below commonly use
(2 pt) 3. Which organism(s) below commonly use
(2 pt) 4. Which organism(s) below commonly
(2 pt) 5. What is meant when a person is
(4 pt) 6. Explain the difference between the terms
Exam III, page 2
(4 pt) 7. Define the terms exaltation and
(4 pt) 8. Define these terms:
streptokinase- Streptococci aggressin for fibrin.
Collagenase - aggressin for breaking down collagen in connective tissue. e.g. Clostridium perfringens
(4 pt) 9. Explain how the following terms increase
hyaluronidase - spreading factor. break down hyaluronic acid, cementing material between cells.
leucocidin - destroys WBC.
(2 pt) 10. Explain how endotoxins are involved in
(4 pt) 11. There is a lower incidence of malaria
Abscence of Duffy factor prevents attachment of malaria to RBC.
(2 pt) 12. Why are the very old more susceptible
(2 pt) 13. What is the number one factor affecting
Exam III, page 3
(3 pt) 14. Explain why eyes are considered a first
(2 pt) 15. Leukocytes are a second line of defense
(4 pt) 16. Explain the role of lymphocytes as
(2 pt) 17. Define neutropenia and give an example of a disease that causes it.
(4 pt) 18. Discuss the etiology of tuberculosis and explain why it is important to
differentiate between tuberculosis and nontuberculosis mycobacteria.
Exam III, page 4
(2 pt) 19. In the United States today, how is tuberculosis normally transmitted?
(6 pt) 20. Explain these terms as they relate to tuberculosis:
miliary t.b.- in blood
latent t.b.- not actively spitting up organism
osseous t.b.- in bone
(2 pt) 21. The best overall diagnostic test for tuberculosis is? Why?
(4 pt) 22. Explain what a positive Mantoux test would indicate for an individual over
40 years old. For a child under 7 years old.
(2 pt) 23. What antibiotics are normally given for first time treatment of
(2 pt) 24. What drug is commonly given in 3 drug regimens for tuberculosis since it
prevents emergence of resistant strains?
(2 pt) 25. For prevention of tuberculosis, what vaccine is commonly used?
(2 pt) 26. Describe the treatment of leprosy.
(2 pt) 27. What is the drug of choice for Diphtheria?
(2 pt) 28. What treatment is prescribed for Staphylococcal food poisoning?
Exam III, page 5
(2 pt) 29. Discuss the following factors relating to toxic shock syndrome:
causative agent (genus and species)-Staphylococcus aureus
predisposing factors- low Mg, adsorbent material
(4 pt) 30. Explain the difference between a carbuncle and furuncle.
(2 pt) 31. What complication of streptococcal pharyngitis results in massive
exfoliation and a lobster red rash?
(2 pt) 32. A late nonsuppurative sequalae of streptococcal pharyngitis that can result
in extensive damage to the heart is?
(3 pt) 33. Describe the following factors related to early onset form of life threatening disease of newborns:
etiology- Streptococcus agalactiae
symptoms- septicemia and pneumonia
mortality rate- 50-80%
(3 pt) 34. Describe the following factors related to botulism food poisoning:
foods associated with- low acid foods e.g. string beans
symptoms- blurred vision, paralysis of diaphragm, stop breathing
treatment- respirator, high enema, antitoxin
(2 pt) 35. In the treatment of tetanus, which antitoxin is usually preferred and why?
(3 pt) 36. Explain the difference between immunotherapy and vaccination.