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Chapter 21 Microbial Diseases of the Skin - San Mateo County

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					                             Microbiology Study Guide
              Chapter 21 Microbial Diseases of
                         the Skin



You should be able to find the information necessary to answer these questions in
Tortora, Funke, and Case, or in lecture. However, for a fuller understanding of the
concept, or to add more detail to your answer you are encouraged to use other sources
(see on-line resources by chapter)



   1. Describe the different properties of skin that make it an effective barrier to
      pathogens.




   2. What is the etiologic agent of oral thrush and vaginitis, and which type of
      organism is it?




   3. Describe the four different types of skin lesions that can help to diagnose diseases.




   4. Describe a skin infection caused by a Staphylococcus aureus infection and a skin
      disease caused by a Streptococcus pyogenes infection.




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   5. What is the etiologic agent for necrotizing fasciitis, and describe the factors
      responsible for its pathogenicity




   6. Describe two skin infections caused by Pseudomonas aeruginosa, and what
      factors contribute to their transmission.




   7. What is the etiologic agent for acne, and describe how acne develops, and what
      treatment options can be used to combat it.




   8. What are warts, and describe how they form.




   9. Explain how smallpox was eradicated, and what feature of the virus made
      eradication possible.




   10. Describe the similarities and the differences between varicella and zoster. Include
       a summary of the transmission routes.



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   11. How is measles transmitted, how does the disease present itself, why is it less
       common than it used to be, and why is that a good thing?


   12. Describe each of the three viruses that children are protected against via the
       combined MMR vaccination.


   13. Why are pregnant women asked if they have had a rubella vaccination?




   14. Describe how Herpes Simplex Virus 1 persists as a latent infection, and what
       happens during the active phase of infection.




   15. Acyclovir is a drug taken to prevent the replication of Herpes Simplex lesions on
       the skin. How does it work?




   16. What causes ringworm, and describe how it is transmitted, how it is treated, and
       why does it grow as a ring?



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   17. What is trachoma, and how does it cause blindness?




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