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8 Cards in this Set
- Front
- Back
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T/F:
The cestodes obtain their nutriment by taking a blood meal from the host. |
False: the cestodes have no digestive organs of their own and thus obtain their nutriment directly from the host GI contents.
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What are the two main species of cestode, and what are their intermediate hosts?
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*Taenia saginata - cow
*Taenia solium - pig |
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Describe the morphology of cestodes.
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*a scolex (head) with sucker plates for attachment
*proglottids are reproductive segments containing male and female organs *gravid proglottids conatin eggs |
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What is the main difference between T. saginata and T. solium?
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*The eggs of T. solium may be transmitted via fecal-oral contact to humans, where they can cause cysticerosis
*T. saginata may only be acquired via consumption of cysts in contaminated meat |
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What is cysticercosis? Is it dangerous?
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*the formation of larval cysts of T. solium in human tissue
*effects vary based on location in the body *cysts in brain tissue can result in seizures |
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How is a tapeworm infection diagnosed?
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Stool sample is examined for eggs.
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How can cysticercosis be diagnosed?
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*based on the presence of antibodies
*note that the adult tapeworm need not be present in these infections |
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What country shows the highest incidence of infection with T. solium? Why?
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*Mexico
*high consumption of raw or undercooked pork |
