Schistosoma Worms Quiz
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Questions and Answers

Which of the following is the primary cause of the chronic granuloma caused by Schistosoma worms?

  • The cercaria penetrating the skin
  • The adult worms living in the body
  • The eggs laid by the adult worms
  • A combination of the above (correct)

    • Which of the following statements is most consistent with the text regarding schistosomiasis?

  • It can only be contracted by drinking contaminated water.
  • It is a bacterial infection.
  • It is spread through direct contact with an infected person.
  • It is caused by a parasitic flatworm. (correct)

    • What is the main component of the granuloma formed in response to schistosome infection?

  • Dead cercaria
  • Dead adult worms
  • Immune cells (correct)
  • Calcium deposits

    • What does 'chronic' mean in the context of schistosomiasis described in the text?

    <p>Long-lasting and can persist for years</p> Signup and view all the answers

    Based on the text, can schistosomiasis cause different types of allergic reactions at different stages of infection?

    <p>Yes, the type of reaction depends on the life stage of the parasite.</p> Signup and view all the answers

    Which type of Schistosoma worms cause the chronic granuloma described in the text?

    <p>S.haematobium and S.mansoni only</p> Signup and view all the answers

    Which species of Schistosoma cause chronic granuloma formation?

    <p>S. haematobium or S. mansoni</p> Signup and view all the answers

    How do humans typically become infected with Schistosoma worms?

    <p>While swimming in infested water</p> Signup and view all the answers

    What type of immune response does the body mount against the cercaria stage of Schistosoma?

    <p>Type IV (Delayed) allergic reaction</p> Signup and view all the answers

    Which type of immune response is triggered by Schistosoma egg and dead worm antigens?

    <p>Type III (Immune complex) allergic reaction</p> Signup and view all the answers

    Does the text suggest a single immune mechanism is responsible for the allergic reaction in schistosomiasis?

    <p>No, there are different immune responses based on parasite life stage</p> Signup and view all the answers

    Which of the following best describes the granulomatous reaction described in the text?

    <p>An immune complex-mediated type III hypersensitivity reaction</p> Signup and view all the answers

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