Faecal Sample Analysis: Sedimentation Methods
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Questions and Answers

What is the primary difference between the eggs of Fasciola hepatica and Paramphistomum spp.?

  • Egg size
  • Operculated or not
  • Egg shape
  • No difference, they are similar (correct)

    • What is the distinctive feature of the anterior end of Fasciola hepatica?

  • A cephalic cone (correct)
  • A forked tail
  • A ventral sucker
  • A penetration gland

    • Which stage of the trematode life cycle is the infective stage?

  • The Sporocyst
  • The Cercaria
  • The Miracidium
  • The Metacercaria (correct)

    • What is the common name of the parasite Paramphistomum spp.?

    <p>Rumen fluke</p> Signup and view all the answers

    How many stages are there in the life cycle of trematodes?

    <p>5 stages</p> Signup and view all the answers

    What is the characteristic shape of the adult Paramphistomum spp.?

    <p>Conical and plump</p> Signup and view all the answers

    What is the primary purpose of the sedimentation technique in faecal sample analysis?

    <p>To detect trematode eggs in faeces</p> Signup and view all the answers

    What is the role of formalin in the formalin-ether sedimentation procedure?

    <p>To preserve the trematode eggs</p> Signup and view all the answers

    What is the characteristic of trematodes that allows them to be detected using the sedimentation technique?

    <p>Their ability to sink rapidly in water</p> Signup and view all the answers

    Which of the following is a characteristic of common trematodes?

    <p>Unsegmented helminths</p> Signup and view all the answers

    What is the purpose of adding ether to the mixture in the formalin-ether sedimentation procedure?

    <p>To facilitate the sedimentation of eggs</p> Signup and view all the answers

    What is the reproductive characteristic of trematodes, except for Schistosomes?

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

    What is the typical length of a Fascioloides magna egg?

    <p>170 um</p> Signup and view all the answers

    What is unique about the Schistosoma haematobium egg?

    <p>It has a prominent terminal spine at the posterior end</p> Signup and view all the answers

    Where are Dicrocoelium dendriticum flukes typically found?

    <p>In the bile ducts</p> Signup and view all the answers

    What is a characteristic of Schistosoma japonicum eggs?

    <p>The description is not provided in the text</p> Signup and view all the answers

    What is the typical size of an adult hepatica?

    <p>5 x 2.5 x 4.5 cm</p> Signup and view all the answers

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