Trematode Classification and Characteristics
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Questions and Answers

What is the characteristic of the cercaria that enables it to infect the definitive host through wet skin penetration?

  • It has no tail
  • It has two tails
  • It has a shell
  • It has one tail (correct)

    • Which protozoan is associated with pigs?

  • Schistosoma spp.
  • Echinococcus granulosus (correct)
  • The Giant Intestinal Protozoan
  • Heterophyes heterophyes

    • What is the purpose of creating a brine solution in the given procedure?

  • To create a fecal shake
  • To preserve the sample
  • To observe crystal formations
  • To dissolve the sample (correct)

    • What is the recommended duration of time to leave the vial undisturbed after adding the brine solution?

    <p>2 hours</p> Signup and view all the answers

    What is the purpose of carefully placing a coverslip on top of the vial?

    <p>To allow for better observation</p> Signup and view all the answers

    What is the unique structure found in male schistosomes that receive a female during copulation?

    <p>Gynecophoral canal</p> Signup and view all the answers

    What is the infective stage of the schistosome life cycle?

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

    What is the approximate duration of the schistosome life cycle in humans?

    <p>20-30 years</p> Signup and view all the answers

    What is the primary habitat of adult schistosomes?

    <p>Portal vein and its branches</p> Signup and view all the answers

    What is the characteristic of the egg morphology of Schistosoma japonicum?

    <p>Lateral knob</p> Signup and view all the answers

    What is the treatment for schistosomiasis?

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

    What is the diagnostic stage of schistosomiasis?

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

    What is the sensitivity of the Merthiolate-Iodine Formol Concentration Technique (MIFC) for schistosomiasis diagnosis?

    <p>Sensitive for moderate and heavy infections</p> Signup and view all the answers

    What is the purpose of the Kato Katz Technique in schistosomiasis diagnosis?

    <p>For enumeration of eggs</p> Signup and view all the answers

    How many endemic provinces are there in the Philippines for schistosomiasis?

    <p>24</p> Signup and view all the answers

    What type of arrangement do the testes of Fasciola hepatica, Fasciolopsis buski, and Clonorchis sinensis have?

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

    What is the shape of the ovary in some trematodes?

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

    Which of the following trematodes has a collar spine in a horse shoe shape?

    <p>Echinostoma ilocanum</p> Signup and view all the answers

    Which of the following trematodes has a prominent cephalic cone or broad shoulder?

    <p>Fasciola hepatica</p> Signup and view all the answers

    What is the classification of the digestive tract of trematodes into?

    <p>Simple and Branched</p> Signup and view all the answers

    What is the primary mode of transmission of Clonorchis sinensis infection?

    <p>Consuming raw or undercooked fish</p> Signup and view all the answers

    What is a common symptom of Clonorchis sinensis infection?

    <p>Dull pain at the right hypochondrium</p> Signup and view all the answers

    What is the treatment of choice for Clonorchis sinensis infection?

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

    What is the characteristic shape of the adult Clonorchis sinensis?

    <p>Narrow, oblong, and flatworm</p> Signup and view all the answers

    What is the diagnostic test of choice for Clonorchis sinensis infection?

    <p>ELISA with crude Clonorchis sinensis antigen</p> Signup and view all the answers

    What is a possible complication of Clonorchis sinensis infection?

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

    What is the primary mode of transmission of Metagonimus yokogawai?

    <p>Ingestion of undercooked or raw freshwater fish</p> Signup and view all the answers

    What is the characteristic feature of the adult morphology of Metagonimus yokogawai?

    <p>Small size, with a length of 0.45 to 0.89 mm and width of 0.21 to 0.32 mm</p> Signup and view all the answers

    What is the intermediate host for Metagonimus yokogawai?

    <p>Freshwater fish</p> Signup and view all the answers

    What is the treatment of choice for Metagonimus yokogawai infection?

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

    What is the diagnostic method for Metagonimus yokogawai infection?

    <p>Kato-Katz Method and Formalin Ether Concentration Technique (FECT)</p> Signup and view all the answers

    What is the common symptom of Metagonimus yokogawai infection?

    <p>Chronic intermittent diarrhea</p> Signup and view all the answers

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