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18 Cards in this Set
- Front
- Back
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Trematodes are commonly referred to as???
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flukes
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the trematodes are hermaphroditic except for the :
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blood flukes ... aka schistosomas
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what is the phylum and the class of the flukes
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PHYLUM – Platyhelminthes (flatworms)
Class – Trematoda |
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1st stage larva that hatches in fresh
water; ciliated; infects 1st intermediate host |
Miracidium
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sac-like structure emerges from
miracidium |
Sporocyst
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intermediate larval stage develops
inside the sporocyst |
Rediae
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final stage of fluke development
that is mobile; has a body and a tail |
Cercariae
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encysted form that is the
infective stage for humans; found in the 2nd intermediate host or on a water plant |
Metacercariae
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a stucture of the trematode egg that acts as an "escape hatch"
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operculum
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a thickening or a knob that may be found at the opposite end of the egg shell from the operculum
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boss
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the LARGE intestinal fluke is known as:
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Fasciolopsis buski
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Fasciolopsis buski has ___??
suckers to hang on to its host |
2
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The eggs of Heterophyes heterophyes and Metagonimus yokogawai are basically indistinguishable and may be easily confused with those of
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Clonorchis sinensis
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the sheep liver fluke is :
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Fasciola hepatica
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Transmitted by eating contaminated
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water plants (especially water cress)
where animal feces are found |
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Fasciola hepatica looks very similar to which other trematode
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Fasciola buski.
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blood flukes are the cause of what disease?>
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bilharzia disease
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2nd most prevalent disease worldwide after malaria
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bilharzia disease from the blood flukes
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