Trematodes

25 Questions | Total Attempts: 639

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Trematodes

Questions and Answers
  • 1. 
    Opisthorchis adults invade the lungs.
    • A. 

      True

    • B. 

      False

  • 2. 
    Opisthorchis viverine is found in Thailand.
    • A. 

      True

    • B. 

      False

  • 3. 
    Viable control methods for Opisthorchis include: Select 2.
    • A. 

      Freezing fish below -20 or cooking thoroughly.

    • B. 

      Pickling, smoking or salting fish.

    • C. 

      Not using night soil in ponds.

    • D. 

      Molluscide

  • 4. 
    Praziquantel and albendazole are used to treat Opisthorchis.
    • A. 

      True

    • B. 

      False

  • 5. 
    Paragonimus adults lay their eggs where:
    • A. 

      Small Intestine wall

    • B. 

      Liver

    • C. 

      Cystic lung cavities

    • D. 

      Large intestine

  • 6. 
    A chest xray of what trematode infection often resembles TB?
    • A. 

      Dicrocoelium dendriticum

    • B. 

      Hymenolepis

    • C. 

      Paragonimus

    • D. 

      Option 4

  • 7. 
    Paragonimus infection is usually treated with:
    • A. 

      Praziquantel

    • B. 

      Suramin

    • C. 

      Nitazoxanide

    • D. 

      Albendazole

  • 8. 
    Paragonimus eggs embryonate in the intestine of the host.
    • A. 

      True

    • B. 

      False

  • 9. 
    Which of these are paragonimus reservoirs?
    • A. 

      Mice and rats

    • B. 

      Cats and dogs

    • C. 

      Crayfish

    • D. 

      Bears

  • 10. 
    This is:
    • A. 

      Semisulcospira

    • B. 

      Cionella

    • C. 

      Bulinus

    • D. 

      Oncomelania

  • 11. 
    What do cercariae become after they penetrate the host skin and lose their tails in Schistosomiasis infection.
    • A. 

      Schistosomulae

    • B. 

      Adult worms

    • C. 

      Metacercariae

    • D. 

      Sporocysts

  • 12. 
    Schistosoma mansoni is found in South America.
    • A. 

      True

    • B. 

      False

  • 13. 
    Ectopic eggs are more likely to be found in japonicum infection than mansoni infection.
    • A. 

      True

    • B. 

      False

  • 14. 
    Which of these trematodes have no water stage in their lifecycle.
    • A. 

      Fasciola gigantica

    • B. 

      Fasciolopsis buski

    • C. 

      Schistosomiasis

    • D. 

      Dicrocoelium dendriticum

  • 15. 
    Dogs are the usual hosts of Dicrocoelium dendriticum.
    • A. 

      True

    • B. 

      False

  • 16. 
    The adult Dicrocoelium worms  lay eggs where?
    • A. 

      Bile ducts

    • B. 

      Lungs

    • C. 

      Blood

    • D. 

      Intestine

  • 17. 
    What are the dimensions of this trematode egg.
    • A. 

      55 microns

    • B. 

      110 - 140 microns

    • C. 

      80 - 90 microns

    • D. 

      25 - 35 microns

  • 18. 
    Fasciola hepatica is a rare human parasite
    • A. 

      True

    • B. 

      False

  • 19. 
    What is eaten to become infected with Fasciola
    • A. 

      Fish

    • B. 

      Watercress

    • C. 

      Crayfish

    • D. 

      Beef

  • 20. 
    Microscopy of faeces will show eggs immediately after infection with Fasciola.
    • A. 

      True

    • B. 

      False

  • 21. 
    Heterophyes heterophyes infection is found:
    • A. 

      South, Central and North America

    • B. 

      Europe and Africa

    • C. 

      Asia, middle East and Africa

    • D. 

      South America

  • 22. 
    Which trematodes can be caught by eating undercooked fish or crayfish.
    • A. 

      Heterophyes heterophyes

    • B. 

      Fasciolopsis

    • C. 

      Paragonimus

    • D. 

      Opisthorchis

    • E. 

      Fasciola

    • F. 

      Dicrocoelium

  • 23. 
    This egg measures 70 - 110 microns. It is Diphyllobothrium.
    • A. 

      True

    • B. 

      False

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