Human Parisitology Lab (1st test)

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7 Terms

1
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2 things to be a parasite

  1. impact host negatively

  2. live in or on the host

*mosquito is not a parasite→ micropredator

*ticks are a parasite

2
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3 classes of Platyhelminthes

  1. terbellaria (not parasitic)

  2. cestodes

  3. trematoda

3
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Schistosoma has 2 things…

  1. sporocysts

  2. cercaria

*no redia and metacercaria.

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  • Redia has a _____.

  • Sporocysts has __ _______.

  • mouth

  • no mouth

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Diphylidium caninum

  • larval stage of flea eats eggs of a worm

  • definitive host (cats or dogs) is infected by ingesting fleas containing cysticercoids.

  • incidental human transmission via ingestion of infected fleas.

<ul><li><p>larval stage of flea eats eggs of a worm</p></li><li><p>definitive host (cats or dogs) is infected by ingesting fleas containing <strong>cysticercoids</strong>. </p></li><li><p><strong>incidental </strong>human transmission via ingestion of infected fleas.</p></li></ul><p></p>
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Diphyllobothriid Tapeworm

  • crustaceans ingests coracidia

  • small fish eats crustaceans

  • predator fish (paratenic host) eats small fish; plerocercoid invades tissue.

  • small fish can be eaten by a bigger fish or a mammal.

7
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order of trematode life cycle

  1. egg

  2. miracidium

  3. sporocyst

  4. redia

  5. cercaria

  6. metacercaria

  7. adult worm