32 Questions
What is the characteristic of the cercaria that enables it to infect the definitive host through wet skin penetration?
It has one tail
Which protozoan is associated with pigs?
Echinococcus granulosus
What is the purpose of creating a brine solution in the given procedure?
To dissolve the sample
What is the recommended duration of time to leave the vial undisturbed after adding the brine solution?
2 hours
What is the purpose of carefully placing a coverslip on top of the vial?
To allow for better observation
What is the unique structure found in male schistosomes that receive a female during copulation?
Gynecophoral canal
What is the infective stage of the schistosome life cycle?
Cercaria
What is the approximate duration of the schistosome life cycle in humans?
20-30 years
What is the primary habitat of adult schistosomes?
Portal vein and its branches
What is the characteristic of the egg morphology of Schistosoma japonicum?
Lateral knob
What is the treatment for schistosomiasis?
Praziquantel
What is the diagnostic stage of schistosomiasis?
Egg
What is the sensitivity of the Merthiolate-Iodine Formol Concentration Technique (MIFC) for schistosomiasis diagnosis?
Sensitive for moderate and heavy infections
What is the purpose of the Kato Katz Technique in schistosomiasis diagnosis?
For enumeration of eggs
How many endemic provinces are there in the Philippines for schistosomiasis?
24
What type of arrangement do the testes of Fasciola hepatica, Fasciolopsis buski, and Clonorchis sinensis have?
Tandem
What is the shape of the ovary in some trematodes?
Round
Which of the following trematodes has a collar spine in a horse shoe shape?
Echinostoma ilocanum
Which of the following trematodes has a prominent cephalic cone or broad shoulder?
Fasciola hepatica
What is the classification of the digestive tract of trematodes into?
Simple and Branched
What is the primary mode of transmission of Clonorchis sinensis infection?
Consuming raw or undercooked fish
What is a common symptom of Clonorchis sinensis infection?
Dull pain at the right hypochondrium
What is the treatment of choice for Clonorchis sinensis infection?
Praziquantel
What is the characteristic shape of the adult Clonorchis sinensis?
Narrow, oblong, and flatworm
What is the diagnostic test of choice for Clonorchis sinensis infection?
ELISA with crude Clonorchis sinensis antigen
What is a possible complication of Clonorchis sinensis infection?
All of the above
What is the primary mode of transmission of Metagonimus yokogawai?
Ingestion of undercooked or raw freshwater fish
What is the characteristic feature of the adult morphology of Metagonimus yokogawai?
Small size, with a length of 0.45 to 0.89 mm and width of 0.21 to 0.32 mm
What is the intermediate host for Metagonimus yokogawai?
Freshwater fish
What is the treatment of choice for Metagonimus yokogawai infection?
Praziquantel
What is the diagnostic method for Metagonimus yokogawai infection?
Kato-Katz Method and Formalin Ether Concentration Technique (FECT)
What is the common symptom of Metagonimus yokogawai infection?
Chronic intermittent diarrhea
Test your knowledge of trematode classification, including their digestive tract types and testes arrangements. Identify characteristics of specific trematodes like Echinostoma ilocanum and Fasciola hepatica.
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