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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

25
DS of P. westermanni
Ova (stool or sputum)
26
Ova: oval, undeveloped miracidium, thin shell, operculated with shoulders, thickening at terminal end
P. westermanni
27
Bladder fluke/Vesical blood fluke
Schistosoma haematobium
28
IS of Schistosomes
Cercariae
29
Schistosome ova with large terminal spine
S. haematobium
30
Adult Schistosome resides in blood vessels around urinary bladder
S. haematobium
31
IH of Schistosomes
Snails
32
Oriental blood fluke
Schistosoma japonicum
33
DS of Schistosomes
Ova
34
Schistosome ova with small lateral spine
S. japonicum
35
Adult Schistosome resides in blood vessels around intestinal tract
S. japonicum | S. mansoni
36
A characteristic irritation of the skin at the site where Schistosomes penetrate
Swimmer's itch (Schistosome dermatitis)
37
Manson's blood fluke
S. mansoni
38
Schistosome ova with large lateral spine
S. mansoni
39
Chinese liver fluke
Clonorchis sinensis

Elsevier Parasitology (RVSP) (10 decks)

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