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8 Cards in this Set

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  • Back
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.
What are the two main species of cestode, and what are their intermediate hosts?
*Taenia saginata - cow
*Taenia solium - pig
Describe the morphology of cestodes.
*a scolex (head) with sucker plates for attachment
*proglottids are reproductive segments containing male and female organs
*gravid proglottids conatin eggs
What is the main difference between T. saginata and T. solium?
*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
What is cysticercosis? Is it dangerous?
*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
How is a tapeworm infection diagnosed?
Stool sample is examined for eggs.
How can cysticercosis be diagnosed?
*based on the presence of antibodies
*note that the adult tapeworm need not be present in these infections
What country shows the highest incidence of infection with T. solium? Why?
*high consumption of raw or undercooked pork