Visceral Flukes Flashcards
1
Q
- During microbiology lab, students identified an organism similar to that of Pneumonia that although had a tail it did not utilize it to swim. Which parasite did the students see?
a. Echinostoma trivolvis
b. Paragonimus westermani
c. S.japonicum
d. Schistosoma mansoni
A
b. Paragonimus westermani
2
Q
- Treatment for human infections of Fasciola hepatica can include which of the following?
a. Bithionol
b. Triclalbendazole
c. Praziquantel
d. Bithionol and Triclalbendazole
e. All answers are correct
A
d. Bithionol and Triclalbendazole
3
Q
- Which of the following is a characteristic symptom of an advanced stage Clonorchis sinensis infection?
a. fever
b. gastric pain
c. cirrhosis of liver
d. anorexia
A
c. cirrhosis of liver
4
Q
- It’s a Friday night, and you decide that you want to go out to eat with your friends. You all go to an authentic Chinese restaurant, and fill up your plates with food. You decide to stock up on sushi–especially the sort that has all of those tasty, uncooked vegetables as a filling. Three months later, you’re having horrible intestinal pain and extreme diarrhea, and your face and torso begins to swell up so much that you may as well be a balloon. What parasite have you most probably been infected with?
a. Opisthorchis felineus
b. Fasciolopsis buski
c. Clonorchis sinensis
A
b.Fasciolopsis buski
5
Q
- Match the definite host to the proper fluke:
[sheep and cattle] 1. F. hepatica
[pigs] 2. F. buski
[fish] 3. C. sinensis
A
[sheep and cattle] 1. F. hepatica
[pigs] 2. F. buski
[fish] 3. C. sinensis
6
Q
- The life cycle of Fasciolopsis buski was a unique one as compared to F. hepatica due to the fact that it:
a. did NOT have a second Redia stage
b. was found predominantly in Asian areas
c. could be transmitted to the definitive host via vegetation ingestion
d. had an animal as its intermediate host
A
a. did NOT have a second Redia stage
7
Q
- What symptom was especially characteristic for a Fasciolopsis buski infection?
a. diarrhea
b. vomiting
c. nausea
d. edema
A
d. edema
8
Q
- Fasciola hepatica tends to be a parasite that infects animals more than it does humans, while Fasciolopsis buski has a tendency to infect more humans.
True
False
A
True
9
Q
- Which of these visceral flukes resides in the liver?
a. Heterophyes
b. Fasciola
c. Clonorchis
d. Metagonimus
A
b. Fasciola
c. Clonorchis
10
Q
- Adult worms of the genera Chlonorchis reside in which region of the human host?
a. hepatic artery
b. bile duct
c. liver tissue
d. liver parenchyma
A
b. bile duct
11
Q
- Mature echinostomes are easily identified by the collar of spines along the dorsal and lateral sides of the head.
True
False
A
True
12
Q
- Which of the following is referred to as the Oriental or Chinese liver fluke?
a. Fasciola Hepatica
b. Fasciolopsis Buski
c. Clonorchis Sinensis
d. Entamoeba Histolytica
A
c. Clonorchis Sinensis
13
Q
- A human can be infected of Fasciola hepatica by consuming
a. Watercress
b. Cow liver
c. Pork chops
d. More than one of the above
A
d. More than one of the above
14
Q
- Fasciola hepatica is treated with the drug triclalbendazole, which primarily functions by targeting the protein {}.
A
tubulin
15
Q
- Chlonorchis sinensis, also known as the Chinese liver fluke, is endemic where people often eat _________?
a. raw fish
b. watercress
c. snails
d. raw meat
A
a. raw fish
16
Q
- In F. buski, the ventral sucker is smaller than the oral sucker.
True
False
A
False
17
Q
- _____ are areas in the host where abscesses and ulcers develop due to the migration of parasites to other areas of the body.
A
{Ectopic sites}
18
Q
- Which of the following is important to take into consideration when diagnosing Fasciolopsis buski?
a. Type of eggs
b. Geography
c. Symptoms
d. Number of worms present in feces
A
b. Geography (and symptoms)
19
Q
- Which part of the human body does Fasciola hepatica infect?
a. bile duct
b. pancreas
c. venules
d. stomach
A
a. bile duct
20
Q
- Which of the following occurs in a person infected with Fasciola hepatica?
a. Host tissue becomes fibrotic due to the host immune response
b. Parasites consume blood so the infected person develops anemia
c. Both of these
d. None of these
A
c. Both of these
21
Q
- Fasciolopsis buski affects which organ or organ system?
a. Large intestine
b. Small intestine
c. Bile duct
d. Liver
A
b. Small intestine
22
Q
- Which of the following is true of Clonorchis sinensis?
a. Pathogenesis is dose related
b. This fluke migrates through the parenchyma
c. Its superfamily is Echinostomatoidea
d. All of the above
A
a. Pathogenesis is dose related
23
Q
- Which of the following is an incorrect match?
a. Infection with F. buski occurs by consuming contaminated vegetation
b. Infection with Chlonorchis sinensis occurs by consuming contaminated fish or crayfish
c. Infection with Paragonimos occurs by consuming contaminated crabs
d. All of the above are correct
A
d. All of the above are correct
24
Q
- Paragonimus westermani, the Oriental Lung Fluke, creates capsules in the lung tissue only if:
a. adult parasites pair in the lung parenchyma
b. adults live past 16 weeks
c. the host is immunocompromised
d. There are enough worms
A
a. adult parasites pair in the lung parenchyma
25
25. Which of the following is/are false in regards to the life cycle of Fasciola hepatica:
a. Redia and Redia II reproduce asexually within the intermediate host
b. The Metacercaria form can be found on vegetation
c. Sporocysts can be found in the definitive host
d. a and c
c. Sporocysts can be found in the definitive host
26
26. Praziquantel is an effective treatment in humans for Fasciola hepatica.
True
False
False
27
27. The largest trematodes that infect humans fall under the Genera Paragonimus.
True
False
False
28
28. In Clonorchis sinensis, the eggs must first be taken up by the intermediate host before transforming into the miracidium form.
True
False
True
29
29. Which of the following are correct concerning the genera Opisthorchis in the phylum Platyhelminthes?
a. Lifecycle is similar to Clonorchis
b. Infect cows and horses
* c. Infect humans and felines
* d. Adults infect biles duct
a. Lifecycle is similar to Clonorchis
30
30. Infection of Fasciola hepatica is most often associated with ___.
a. Consumption of water cress
b. Contact with infected rodents
c. Mosquitoes in endemic areas
d. Destruction of lung tissue
a. Consumption of water cress
31
31. All of the following are treated by the drug praziquantil except:
a. Heterophyes heterophyes
b. Clonorchis sinensis
c. Paragonimus westermani
d. Fasciola hepatica
d. Fasciola hepatica
32
32. A patient goes to the doctor with symptoms of fatigue and abdominal pain. Upon examination, the doctor discovers that the patient also has a pneumothorax and lung abscesses. The patient has likely been infected by __________.
a. Fasciola hepatica
b. Metagonimus yokogawai
c. Paragonimus westermani
d. Opisthorchis felinus
c. Paragonimus westermani
33
33. ________ is native to the United States.
a. P. westermani
b. P. africanus
c. P. mexicanus
d. P. kellicotti
d. P. kellicotti
34
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34. Fasciola hepatica adults can live for up to __________ years in humans ___________ years in cattle.
A. 5; 10
B. 11; 2
C. 2; 11
D. 10; 5
```
B. 11; 2
