MIC 541-Exam 5-Parisitology 4

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kyleannkelsey
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218323
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MIC 541-Exam 5-Parisitology 4
Updated:
2013-05-07 13:43:56
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MIC 541 Exam Parisitology
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MIC 541-Exam 5-Parisitology 4
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  1. Where is Acanthamoeba keratitis usually found?
    Free-living
  2. What are the characteristics of Flagellates?
    • Single celled
    • Binary fission
    • Flagella
    • Sucking discs near cytostome
    • Many are non-invasive
  3. What do flagellates use to adhere to surfaces?
    Sucking disks near the cytostome
  4. Where can you find Non-invasive flagellates?
    • Mouth
    • Vagina
    • Intestines of vertebrates
  5. How many non-invasive flagellates cause disease?
    Only 2
  6. What group do flagellates belong to?
    Protozoa
  7. What are the two non-invasive flagellates that cause disease?
    • Giardia lamblia
    • Trichanosis vaginalis
  8. What is the infection rate of Giardia Lamblia in developing nations?
    25-30%
  9. What is the second most identified parasite in the U.S.?
    Giardia lamblia
  10. What group does Giardia lamblia belong to?
    Protozoa - flagellates - non-invasive
  11. What percent of U.S. stool samples contain Giardia lamblia?
    4%
  12. What is the route of transmission for Giardia lamblia?
    Fecal oral route
  13. What form is Giardia lamblia in during transmission?
    Resistant cyst
  14. How can you get rid of Giardia lamblia in water?
    • Filtration or boiling
    • NOT CHLORINE
  15. Can you rid of Giardia lamblia in water by addition of chlorine?
    No
  16. Can you rid of Giardia lamblia in water by boiling or filtration?
    Yes
  17. What does intestinal mucosa look like during a Giardia infection?
    • Villus atrophy
    • Crypt hyperplasia
  18. What infection would cause intestinal Villus atrophy and crypt hyperplasia?
    Giardia lamblia
  19. Describe the pathogenesis of Giardia lamblia?
    • Cysts ingested
    • Trophozoites hatch
    • Attach to intestinal villi
    • incubation of 10 days causes disease in some
  20. What percent of patients carry Giardia lamblia amsymptomatically?
    1/2 to 2/3
  21. How long must Giardia lamblia incubate before it causes clinical disease?
    About 10 days

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