Hydatid Cysts and Protoscolices Formation
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Questions and Answers

How do adult tapeworms absorb their nutrients?

  • By photosynthesis
  • Through their mouth
  • Directly from their host through their integument (correct)
  • Through their segmented proglottids
  • What is the function of the scolex in an adult tapeworm?

  • Segment generation
  • Attachment to the intestinal wall (correct)
  • Nutrient absorption
  • Reproduction
  • In the life cycle of Taenia saginata & T.solium, who are the definitive hosts that harbor the adult worms?

  • Fish and amphibians
  • Cattle and pigs
  • Birds and reptiles
  • Humans and dogs (correct)
  • Where is the natural habitat of Taenia saginata & T.solium in the human host?

    <p>(Upper jejunum) small intestine</p> Signup and view all the answers

    What is the infectious stage of Schistosoma cercariae known as?

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

    What is the most significant pathology associated with Schistosoma infections?

    <p>Schistosome eggs</p> Signup and view all the answers

    What symptom can be induced by cercariae penetration into the skin?

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

    What is the primary mechanism of action of Praziquantel against Schistosoma species?

    <p>Damaging the worm's tegument membrane</p> Signup and view all the answers

    What is one of the symptoms that can occur in travelers to endemic countries after cercariae penetrate their skin?

    <p>Swollen lymph nodes</p> Signup and view all the answers

    What complication can result from gradual accumulation of scar tissue within the bladder and ureters due to schistosome egg deposition?

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

    What is the function of brood capsules in a hydatid cyst?

    <p>Develop into a hydatid cyst</p> Signup and view all the answers

    Why are humans considered aberrant intermediate hosts for Echinococcus granulosus?

    <p>They acquire the infection from dog feces</p> Signup and view all the answers

    How do hydatid cysts lead to symptoms in the liver?

    <p>By causing compression and atrophy</p> Signup and view all the answers

    Why are blood flukes like Schistosoma japonicum, Schistosoma mansoni, and Schistosoma haematobium known as water-borne parasitic diseases?

    <p>Because they cause diseases transmitted through water</p> Signup and view all the answers

    How can tapeworm infection be diagnosed?

    <p>By finding eggs or proglottids in the stool</p> Signup and view all the answers

    What is the drug of choice for treating T.solium infection?

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

    What is the primary method of control for tapeworm infections in areas where they are common?

    <p>Improved sanitation and feces disposal</p> Signup and view all the answers

    In which animal does Echinococcus granulosus reside as an adult worm?

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

    How do humans become infected with Echinococcus granulosus?

    <p>By consuming eggs from infected dog feces</p> Signup and view all the answers

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