Strongyloides stercoralis: Parasitology Quiz
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Questions and Answers

What is the habitat of the Strongyloides stercoralis in humans?

  • Buccal cavity
  • Intestine
  • Esophagus
  • Duodenum (correct)

    • What is the characteristic of the ova of Strongyloides stercoralis?

  • Thick-shelled and opaque
  • Small and elliptical
  • Thin-shelled and transparent (correct)
  • Large and oval

    • In which stage of the life cycle of Strongyloides stercoralis is the infective stage?

  • Filariform (correct)
  • Rhabditiform
  • Ova
  • Genital primordium

    • What is the primary method of diagnosis of Strongyloides stercoralis?

    <p>Recovery and identification of rhabditiform larvae in feces</p> Signup and view all the answers

    What is the characteristic of the larvae of Strongyloides stercoralis in feces?

    <p>Similar to hookworm larvae</p> Signup and view all the answers

    What is the main habitat of Strongyloides stercoralis in humans?

    <p>Duodenum</p> Signup and view all the answers

    What is the characteristic feature of the parasitic adult female Strongyloides stercoralis?

    <p>Parthenogenetic</p> Signup and view all the answers

    What is the morphology of the free-living female Strongyloides stercoralis?

    <p>Shorter esophagus</p> Signup and view all the answers

    Which stage of Strongyloides stercoralis is non-feeding?

    <p>Filariform</p> Signup and view all the answers

    What is the characteristic feature of the free-living male Strongyloides stercoralis?

    <p>Larger buccal cavity</p> Signup and view all the answers

    What is the infective stage of Strongyloides stercoralis?

    <p>Filariform</p> Signup and view all the answers

    What is the distinctive feature of the parasitic adult Strongyloides stercoralis?

    <p>Presence of chitinous, leaf-like processes</p> Signup and view all the answers

    What is the primary mode of transmission of Anisakis species to humans?

    <p>Through the ingestion of infected crustaceans or fish</p> Signup and view all the answers

    What is the infective stage of Anisakis species that is ingested by humans?

    <p>Filariform larva</p> Signup and view all the answers

    What is the purpose of freezing the fish at -20°C for 24 hours?

    <p>To kill the Anisakis larvae in the fish</p> Signup and view all the answers

    What is the stage of Anisakis species that develops in the vector?

    <p>Larval stage</p> Signup and view all the answers

    What is the purpose of evisceration of fish soon after catch?

    <p>To remove the Anisakis larvae from the fish</p> Signup and view all the answers

    What is the characteristic feature of the larval stage of Anisakis species?

    <p>Inconspicuous buccal cavity</p> Signup and view all the answers

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