MIC 541-Exam 5-Parisitology 13

Card Set Information

MIC 541-Exam 5-Parisitology 13
2013-05-07 17:13:24
MIC 541 Exam Parisitology 13

MIC 541-Exam 5-Parisitology 13
Show Answers:

  1. Do Trematodes usually cause infections in the U.S.?
  2. What infection was discussed in class as a U.S. Trematode disease?
    Swimmer's itch in the northeast
  3. What is the most important Helminth disease in the world?
  4. What is Schistosomiasis?
    Chronic infection of Trematodes
  5. Why is Schistosomiasis not common in the U.S.?
    • Sanitation
    • Lack of proper snail
  6. What is required for Schistosomiasis?
    Proper snail intermediate
  7. Describe the reproduction of Trematodes:
    • Separate sexes
    • Mate in the liver
    • Eggs excreted by host feces/urine
    • Hatch and produce ciliated larvae
    • Penetrates snail
    • Sexually reproduce in snail
    • Tail bearing offspring penetrate human skin
    • Mature in human host
  8. Where are Trematode infections most prevalent?
    Sub Saharan Africa
  9. Where would you find Schistosoma haematobium?
    Africa Middle east
  10. Where would you find Schistosoma mansoni?
    • Africa
    • Latin America
  11. Where would you find Schistosoma japonicum?
    Pacific region
  12. Where do Schistosoma mate?
    • In snails to produce tail bearing offspring
    • In Human livers to produce ciliated offspring
  13. What are most of symptoms of Schistosoma due to?
    • Host response:
    • Allergic reaction
  14. What is the worst possible outcome of Schistosoma infections?
    Liver damage leading to death
  15. How do you treat Schistosoma infections?
  16. What are normal signs/symptoms of Schistosoma infections?
    • Allergic rash
    • Tissue granulomas
    • Fever
    • Headache
    • abdominal pain
    • diarrhea
    • Liver damage
  17. Where do granulomas form with a Schistosoma infection?
    Around the eggs in the tissue of humans
  18. Why does Schistosomiasis cause liver damage?
    Millions of eggs are released into the liver causing fibrosis
  19. What are the general characteristics of Arthropods?
    • Ectoparasites
    • No vector
    • Temporary infections
    • Often carry bacterial infections