trematodes
15 Questions
4 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the shape of the adult Fasciolopsis buski?

  • Equipped with so-called shoulders (correct)
  • Somewhat oblong
  • Oval
  • Pyriform
  • What feature is characteristic of the adult Fasciolopsis buski?

  • Fleshy adult
  • Protected by an outer layer of fine spines
  • Tiny layer of scaly spines covers the organism
  • Equipped with so-called shoulders (correct)
  • What is the shape of the egg of Fasciola hepatica?

  • Oval
  • Somewhat oblong (correct)
  • Pyriform
  • Roundish
  • What is the size of the adult Fasciola hepatica?

    <p>5 by 1.5 cm</p> Signup and view all the answers

    What is the shape of the Fasciolopsis buski eggs?

    <p>Somewhat oblong</p> Signup and view all the answers

    What is the size range of Fasciolopsis buski eggs?

    <p>128-140 um by 78-85 um</p> Signup and view all the answers

    What is present in the eggs of Fasciolopsis buski?

    <p>Undeveloped miracidium</p> Signup and view all the answers

    What is a characteristic feature of Fasciolopsis buski eggs?

    <p>Presence of operculum</p> Signup and view all the answers

    What is the drug of choice for treating Fasciolopsis buski infections?

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

    What is the mode of transmission for Fasciolopsis buski?

    <p>Ingestion of water plants with metacercariae</p> Signup and view all the answers

    What is the diagnostic stage of Fasciolopsis buski?

    <p>Unembryonated eggs passed in feces</p> Signup and view all the answers

    What is the intermediate host of Fasciolopsis buski?

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

    What is the definitive host of Fasciolopsis buski?

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

    What is the treatment for Fasciolopsis buski infection?

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

    What is a common symptom of Fasciolopsis buski infection?

    <p>All of the above</p> Signup and view all the answers

    Study Notes

    Characteristics of Trematodes

    • Fasciola hepatica: 128-150 um by 60-90 um, somewhat oblong, with an undeveloped miracidium present
    • Clonorchis sinensis: 78-120 µm long, 45-60 µm wide, somewhat oval, with a prominent operculum
    • Schistosoma mansoni: 112-182 µm by 40-75 µm, oblong, with a developed miracidium large and lateral
    • Fasciolopsis buski: 5 by 1.5 cm, somewhat oblong, fleshy adult, with an undeveloped miracidium present
    • Heterophyes heterophyes: 1.5 by 0.5 mm, pyriform, with a tiny layer of scaly spines covering the organism
    • Metagonimus yokogawai: 1 by 0.5 mm, pyriform, with tapering at the anterior end and rounding at the posterior end
    • Paragonimus westermani: 1 by 0.7 cm, somewhat oval, with a prominent operculum

    Life Cycle

    • Infective stage: Free-swimming cercariae released from snail into water
    • Definitive stage: Eggs shed from infected human
    • Intermediate host: Freshwater snails
    • Definitive host: Humans

    Egg/Ova Characteristics

    • Fasciolopsis buski: 128-140 um by 78-85 um, somewhat oblong, with an undeveloped miracidium present
    • Fasciola hepatica: Undeveloped miracidium present, with distinct shoulders and a small knob opposite operculum

    Symptoms and Complications

    • Fasciolopsiasis: Abdominal discomfort, inflammation, and bleeding in the affected area, jaundice, diarrhea, gastric discomfort, edema, malabsorption syndrome, and intestinal obstruction
    • Fascioliasis: Headache, fever, and chills, pain in the liver area, eosinophilia, jaundice, liver tenderness, anemia, diarrhea, and digestive discomfort
    • Clonorchiasis: Fever, abdominal pain, eosinophilia, diarrhea, anorexia, epigastric discomfort, and occasional jaundice
    • Heterophyiasis: Fever, abdominal pain, eosinophilia, diarrhea, anorexia, epigastric discomfort, and occasional jaundice
    • Paragonimiasis: Cough, bloody diarrhea, eosinophilia, painful urination, and hematuria
    • Complications: Nephrotic syndrome, bladder cancer, increased risk of Salmonella infections, and central nervous system involvement

    Treatment

    • Praziquantel: Effective against all trematodes
    • Surgery: Necessary for patients in whom obstruction has occurred

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge on the life cycle and characteristics of Fasciolopsis buski, a parasitic flatworm. Learn about the different stages of its life cycle, including cercariae and egg characteristics. Understand the hosts and vectors involved in its transmission.

    Use Quizgecko on...
    Browser
    Browser