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Elsevier Parasitology (RVSP) > 5. Trematodes > Flashcards

5. Trematodes Flashcards

1
Q

Life cycle of trematodes

A
  • miracidium: infective to 1st IH
  • sporocyst
  • redia
  • cercaria: infective to 2nd IH
  • metacercaria: infective to DH
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2
Q

AKA trematodes

A

Flukes

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3
Q

DS for C. sinensis

A

Ova

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4
Q

Ova with miracidium, large shoulders, operculated, terminal knob

A

C. sinensis ova

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5
Q

Habitat of C. sinensis in humans

A

Liver

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6
Q

Large intestinal fluke

A

Fasciolopsis buski

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7
Q

DS of F. buski

A

Ova

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8
Q

IS of F. buski

A

Ova

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9
Q

Ingestion of undercooked fish

A

C. sinensis
H. heterophyes
M. yokogawa

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10
Q

Ingestion of infected water plants

A

F. buski

F. hepatica

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11
Q

Ingestion of crab

A

P. westermanni

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12
Q

Sheep liver fluke

A

Fasciola hepatica

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13
Q

Differentiate F. hepatica and F. buski based on adult larva

A

F. hepatica adult larva has shoulders while F. buski adult larva has none

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14
Q

IS of F. hepatica

A

Ova

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15
Q

DS of F. hepatica

A

Ova

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16
Q

Fluke where humans are accidental hosts, sheep are the DH

A

F. hepatica

17
Q

Von Siebold’s fluke

A

Heterophyes heterophyes

18
Q

Heterophid fluke in Africa, the Far East, Near East, Egypt

A

Heterophyes heterophyes

19
Q

Flask-shaped ova

A

H. heterophyes

20
Q

Ova of H. heterophyes is similar to ova of

A

C. sinensis

M. yokogawa

21
Q

Pyriform adult larva

A

H. heterophyes

22
Q

Heterophid fluke in the Far East, Europe and Siberia

A

Metagonimus yokogawa

23
Q

Oriental lung fluke

A

Paragonimus westermanni

24
Q

IS of P. westermanni

A

Ova

25
Q

DS of P. westermanni

A

Ova (stool or sputum)

26
Q

Ova: oval, undeveloped miracidium, thin shell, operculated with shoulders, thickening at terminal end

A

P. westermanni

27
Q

Bladder fluke/Vesical blood fluke

A

Schistosoma haematobium

28
Q

IS of Schistosomes

A

Cercariae

29
Q

Schistosome ova with large terminal spine

A

S. haematobium

30
Q

Adult Schistosome resides in blood vessels around urinary bladder

A

S. haematobium

31
Q

IH of Schistosomes

A

Snails

32
Q

Oriental blood fluke

A

Schistosoma japonicum

33
Q

DS of Schistosomes

A

Ova

34
Q

Schistosome ova with small lateral spine

A

S. japonicum

35
Q

Adult Schistosome resides in blood vessels around intestinal tract

A

S. japonicum

S. mansoni

36
Q

A characteristic irritation of the skin at the site where Schistosomes penetrate

A

Swimmer’s itch (Schistosome dermatitis)

37
Q

Manson’s blood fluke

A

S. mansoni

38
Q

Schistosome ova with large lateral spine

A

S. mansoni

39
Q

Chinese liver fluke

A

Clonorchis sinensis

Elsevier Parasitology (RVSP) (10 decks)

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