Parasitology Feb 2011 Part 2

26 Questions | Total Attempts: 170

Parasitology Feb 2011 Part 2 - Quiz

Questions and Answers
  • 1. 
    D. latum has a relatively complex life cycle that requires ______ intermediate hosts.
  • 2. 
    Human infection of D. latum has begun when the ________ is ingested when consuming contaminated freshwater fish that is either raw or undercooked.
  • 3. 
    In relating with D. latum the first intermediate host is the Cyclops species _______.
  • 4. 
    In the second stage involving D. Latum the _____, occurs in the copepod; this infected copepod is ingested by the second intermediate host, a freshwater fish.
  • 5. 
    When an adult D. latum worm takes up residence in and attaches itself  to the proximal part of the _______, the patient is at risk for developing vitamin B12 deficiency; this condition mimics that of pernicious anemia.
  • 6. 
    Resident of _______ appear to be at higher risk for contracting Diphyllobothrium latum.
  • 7. 
    Diphylidium ________ is known as the dog/cat tapeworm.
  • 8. 
    Humans may become accidentally infection with Diphylidium Caninum upon ingestion of intermediate hosts, dog and cat _________.
  • 9. 
    Incidence of Diphylidium caninum is worldwide with ____ being primary persons at risk.
  • 10. 
    D. caninum diagnosis is based on the recovery of the characteristic _____ packet or gravid proglottids in stool samples.
  • 11. 
    The average D. caninum egg may range in diameter from _______- 60 um.
  • 12. 
    The average D. caninum egg consists of the typical _______ - hooked onchosphere.
  • 13. 
    Unlike the eggs of other cestodes which appear individually, those of D. caninum form membrane-enclosed _______; each packet may contain 5-30 eggs.
  • 14. 
    D. caninum scolex is equipped with four suckers; the scolex is also armed with 1 -___ circlet of spines on the rostellum.
  • 15. 
    Mature and gravid proglottids of D. caninum resemble _______ seed in shape.
  • 16. 
    For D. caninum each mature segment contains two sets of both male and female reproductive organs; following self-fertilization, the resulting gravid proglottid is full of eggs enclosed in an ________ membrane.
  • 17. 
    Echinococcus Granulosus is primarily found in areas where ________ are raised and where such animals are in close contact with dogs or wild canines.
  • 18. 
    Echinoococcus granulosus is also known as the ___ or hydatid tapeworm.
  • 19. 
    Humans are considered to be ________ hosts because the Echinococcus life cycle ceases in human tissue
  • 20. 
    When the ________ serves as the intermediate host for Echinococcus Granulosus, the life cycle may be completed.
  • 21. 
    Humans serve as ________ intermediate host for Echinococcus Granulosus.
  • 22. 
    In Echinococcus Granulosis ingested eggs may migrate to a number of tissue sites, including the lung and liver; a _______ cyst develops in the infected tissue.
  • 23. 
    Eggs of E. granulosus are identical to and indistinguishable from those of ______ species.
  • 24. 
    The diagnostic stage of the Echinococcus Granulosis is that of the ________ stage, not the egg.
  • 25. 
    Relating to Echinococcus Granulosus,  Within the hydatid cyst, miniaturizations of the entire hydatid cyst may occur and are called ____________ cysts.
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