Echinococcus Granulosus Parasite Lifecycle
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Questions and Answers

What is the diagnostic stage of Echinococcus Granulosus?

  • Ectocyst
  • Endocyst
  • Pericyst
  • Hidated cyst (correct)

Which layer of the hydatid cyst wall is composed of characteristic a cellular, chitinous, laminated hyaline material?

  • Endocyst
  • Ectocyst (correct)
  • Pericyst
  • Acephalocysts

What is found in the interior of the hydatid cyst?

  • Hydatid fluid (correct)
  • Acephalocysts
  • Endocyst
  • Scolices

What does an acephalocyst refer to?

<p>Sterile cysts that never produce brood capsules (C)</p> Signup and view all the answers

What is the mode of transmission of Echinococcus Granulosus in humans, sheep, and cattle?

<p>Ingestion of eggs through contaminated food or water (C)</p> Signup and view all the answers

What is the outer host inflammatory reaction consisting of fibroblastic proliferation, mononuclear cells, eosinophils, and giant cells known as?

<p>Pericyst (A)</p> Signup and view all the answers

Which of the following is the recommended treatment for early stages of hydatid cysts?

<p>Puncture, aspiration, injection, and reaspiration (PAIR) (B)</p> Signup and view all the answers

Which of the following is the definitive host for Echinococcus granulosus?

<p>Dogs and wolves (C)</p> Signup and view all the answers

What is the infective stage of Echinococcus granulosus?

<p>Embryonated egg (C)</p> Signup and view all the answers

Which of the following is the optimal definitive host for Echinococcus granulosus?

<p>Dog (D)</p> Signup and view all the answers

How is the mode of transmission of Echinococcus granulosus in humans?

<p>Ingestion of eggs in raw vegetables or in dogs' feces (D)</p> Signup and view all the answers

What is the larval form of Echinococcus granulosus called in the intermediate host?

<p>Hydatid cyst (B)</p> Signup and view all the answers

What is the characteristic morphology of Echinococcus granulosus?

<p>Small, short neck, 4 suckers, 2 rows of hooks (A)</p> Signup and view all the answers

Which of the following statements about acephalocysts is correct?

<p>They lack a scolex and protoscolex (B)</p> Signup and view all the answers

What is the diagnostic stage of Echinococcus granulosus?

<p>Hydatid cyst (B)</p> Signup and view all the answers

Which of the following is the ideal intermediate host for Echinococcus granulosus?

<p>Sheep (C)</p> Signup and view all the answers

How does a human become infected with Echinococcus granulosus?

<p>By ingesting eggs from contaminated food or water (B)</p> Signup and view all the answers

What is the morphology of the adult Echinococcus granulosus worm?

<p>It has a scolex with 4 suckers and a prominent rostellum with hooklets, a short neck, and a strobila with 3 proglottids (B)</p> Signup and view all the answers

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