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 (C)</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. (D)</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 (A)</p> Signup and view all the answers

Which species of Schistosoma cause chronic granuloma formation?

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

How do humans typically become infected with Schistosoma worms?

<p>While swimming in infested water (C)</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 (A)</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 (D)</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 (A)</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 (D)</p> Signup and view all the answers

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