Parasitology: Hookworm and Strongyloides stercoralis
30 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the most common symptom of hookworm infection?

  • Ground itch
  • Anemia (correct)
  • Gastrointestinal symptoms
  • Respiratory symptoms
  • Where are both N. americanus and A. duodenale found?

  • Middle East and North Africa
  • Europe and Oceania
  • Asia and Africa (correct)
  • The Americas only
  • Where do adult hookworms reside in the human body?

  • Colon
  • Large intestine
  • Stomach
  • Small intestine (correct)
  • How can larvae be used to differentiate between N. americanus and A. duodenale?

    <p>By rearing filariform larvae in a fecal smear</p> Signup and view all the answers

    What is the predominant species in the Americas and Australia?

    <p>N. americanus</p> Signup and view all the answers

    How do hookworm larvae enter a human host?

    <p>Through the skin</p> Signup and view all the answers

    Which method is most commonly used to diagnose hookworm infection?

    <p>Microscopic identification of eggs in stool</p> Signup and view all the answers

    What is the length range of adult female Ancylostoma duodenale?

    <p>10 to 13 mm</p> Signup and view all the answers

    What additional symptoms, apart from anemia, can occur in hookworm infection?

    <p>'Ground itch'</p> Signup and view all the answers

    How long can hookworm infective larvae survive in favorable environmental conditions?

    <p>4 weeks</p> Signup and view all the answers

    What is the characteristic feature of an Ascaris egg containing a larva?

    <p>It is infective when ingested</p> Signup and view all the answers

    How do hookworm larvae reach the small intestine after penetrating the skin?

    <p>Through blood vessels to the lungs</p> Signup and view all the answers

    What is the size range of Strongyloides stercoralis male worms?

    <p>1 mm</p> Signup and view all the answers

    How are hookworm infections generally treated?

    <p>With albendazole for 1-3 days</p> Signup and view all the answers

    What is the most distinctive aspect of the Strongyloides life cycle compared to other nematodes?

    <p>Potential for autoinfection</p> Signup and view all the answers

    What happens to the rhabditiform larvae of Strongyloides stercoralis that molt twice?

    <p>They become infective filariform larvae</p> Signup and view all the answers

    Which type of life cycle does Strongyloides stercoralis exhibit?

    <p>Free-living cycle</p> Signup and view all the answers

    How do the filariform larvae of Strongyloides stercoralis initiate the parasitic cycle in humans?

    <p>Penetrate the human host skin</p> Signup and view all the answers

    What is the most typical symptom of enterobiasis?

    <p>Perianal pruritus</p> Signup and view all the answers

    Where do gravid females migrate to oviposit in enterobiasis?

    <p>On the skin of the perianal area</p> Signup and view all the answers

    What is retroinfection in the context of enterobiasis?

    <p>Migration of larvae from skin to rectum</p> Signup and view all the answers

    Where is microscopic identification of eggs done to diagnose enterobiasis?

    <p>On a slide after pressing adhesive tape on perianal skin</p> Signup and view all the answers

    In which location is enterobiasis more common according to the text?

    <p>Temperate countries</p> Signup and view all the answers

    What is the estimated number of persons infected with enterobiasis in the United States?

    <p>40 million</p> Signup and view all the answers

    How long can Taenia saginata survive in the upper jejunum?

    <p>25 years</p> Signup and view all the answers

    Which part of the tapeworm body is responsible for holding onto the host's intestine?

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

    How many suckers does the scolex of Taenia saginata possess?

    <p>4 suckers</p> Signup and view all the answers

    How many rows of hooklets are present on the scolex of Taenia solium?

    <p>2 rows</p> Signup and view all the answers

    In which part of the tapeworm body are the lateral genital pores located?

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

    How many lateral branches make up the uterus in the terminal segments of Taenia saginata?

    <p>15-20 lateral branches</p> Signup and view all the answers

    More Like This

    Hookworm Infection Overview
    18 questions
    Hookworm Infection and Epidemiology
    16 questions
    Hookworm Overview and Biology
    29 questions

    Hookworm Overview and Biology

    InestimableJasmine4271 avatar
    InestimableJasmine4271
    Use Quizgecko on...
    Browser
    Browser