Clinical Parasitology: Cestodes Module 4
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Questions and Answers

What is unique about Hymenolepis nana among the Cestodes?

  • It is a true tapeworm
  • It has two life cycles: Direct and Indirect (correct)
  • It has a single life cycle
  • It is a false tapeworm

    • Which of the following Cestodes belongs to Pseudophyllidea?

  • Echinococcus granulosus
  • Taenia solium
  • Diphyllobothrium latum (correct)
  • Hymenolepis nana

    • What is the characteristic of the adult worm in the intestines of the definitive host?

  • It absorbs nutrients and excretes waste products through its outer surface (correct)
  • It has a complex body structure
  • It has multiple hosts
  • It has a single larval stage

    • What is the result of human ingestion of egg or larval stage of Cestodes?

    <p>An adult worm eventually emerges in the intestine</p> Signup and view all the answers

    What is the characteristic of the eggs of Diphyllobothrium latum?

    <p>They are operculated</p> Signup and view all the answers

    What characteristic do cestodes possess, which is unlike other helminths?

    <p>Having a longer lifespan</p> Signup and view all the answers

    What is the classification of cestodes?

    <p>Phylum: Platyhelminthes, Class: Cestoda</p> Signup and view all the answers

    What is the laboratory diagnosis method most commonly used for Cestodes?

    <p>Stool examination</p> Signup and view all the answers

    What is the characteristic of the body of adult tapeworms?

    <p>Flattened and ribbon-like</p> Signup and view all the answers

    What is the developmental stage of cestodes that inhabit tissues?

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

    What is the characteristic of the cuticle that covers the body of cestodes?

    <p>It is resistant to damage</p> Signup and view all the answers

    What is the exception to the hexacanth embryo in the phylum Platyhelminthes?

    <p>Echinococcus granulosus</p> Signup and view all the answers

    What is the characteristic feature of the scolex of T.solium?

    <p>Double row of brown chitinous hooks</p> Signup and view all the answers

    Which of the following tapeworms has a rudimentary apical rostellum without hooks?

    <p>H.diminuta</p> Signup and view all the answers

    What is the function of the rostellum in the scolex?

    <p>Attachment and penetration of the intestinal mucosa</p> Signup and view all the answers

    Which of the following tapeworms has a retractile rostellum with single row of Y-shaped hooks?

    <p>H.nana</p> Signup and view all the answers

    What is the shape of the scolex of D.latum?

    <p>Spatulate/Spoon Shaped</p> Signup and view all the answers

    Which of the following tapeworms has no rostellum or hooks?

    <p>T.saginata</p> Signup and view all the answers

    What is the distinctive feature of H.nana hexacanth in terms of its presence in the intestinal wall of infected host?

    <p>Presence of 6 small hooks (hooklets), arranged in pairs</p> Signup and view all the answers

    Which of the following is NOT a clinical symptom of intestinal cestode infection?

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

    What is the characteristic feature of the uterus in mature gravid segments of D.latum?

    <p>Not distinct</p> Signup and view all the answers

    What is the typical location of the genital pore in mature gravid segments of cestodes?

    <p>Laterally located</p> Signup and view all the answers

    Which of the following cestodes has a characteristic persistent cough as a clinical symptom?

    <p>T.solium</p> Signup and view all the answers

    What is the characteristic feature of the segments of E.granulosus?

    <p>Presence of 1 set of reproductive structure</p> Signup and view all the answers

    What is the characteristic of the uterus in a gravid segment of E. granulosus?

    <p>Sac-like and not usually visible</p> Signup and view all the answers

    Which of the following tapeworms has an intermediate host of cattles or cows?

    <p>Taenia saginata</p> Signup and view all the answers

    What is the characteristic of the proglottid of a typical taeniid?

    <p>Armed with hooks</p> Signup and view all the answers

    How many segments can a Taenia solium tapeworm produce?

    <p>800-1000</p> Signup and view all the answers

    What is the characteristic of the infective stage of Taenia saginata?

    <p>Cysticercus cellulosae</p> Signup and view all the answers

    What is the length of the adult tapeworm of D. latum?

    <p>5-10 m</p> Signup and view all the answers

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