Shared Flashcard Set

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Introduction to Cestodes
flash cards for tapeworms
31
Veterinary Medicine
Not Applicable
08/23/2010

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Cards

Term
What is the distribution of cestodes?
Definition
Worldwide
Term
How are cestodes transmitted?
Definition
Through ingestion of eggs
Term
What are sources of contamination of cestodes?
Definition
1. swine feces
2. human feces
3. contaminated food and water
4. contaminated fingers (under nails)
Term
What are cysticercoids?
Definition
The larval stage of tapeworms which resides in a cyst
Term
What is cysticercosis?
Definition
Infection of cysticerci in subcutaneous, muscle or central nervous system tissues
Term
What are the signs of cysticercosis in animals?
Definition
Very few; “poor doer”
Term
Where are cysticerci usually located?
Definition
1. eyes
2. muscle
3. brain/spinal cord
Term
What are the three body parts of a cestode divided into?
Definition
1. scolex
2. neck
3. proglottid
Term
What is the habitat of cestodes?
Definition
The small intestine
Term
What do cestode eggs look like?
Definition
They are striated with 6 hooks inside
Term
What is the life cycle of a cestode?
Definition
1. adults release proglottids in the feces of the host
2. proglottids rupture, spreading eggs, which are eaten by the intermediate host
3. eggs develop into a cysticercoid
4. the primary host eats the intermediate host, ingesting the cysticercoid
5. the cysticercoid developes into an adult in the small intestine of the primary host
Term
What is the intermediate host of taenia spp?
Definition
rodents and rabbits
Term
What are the signs of Taenia spp?
Definition
1. rubbing and licking rear end
2. weight loss
3. intestinal disturbances
Term
Is Taenia spp in cats and dogs zoonotic?
Definition
No – Taenia must pass through an intermediate host first
Term
What medications are used to treat Taenia spp?
Definition
1. Droncit (praziquantel)
2. Drontal (Praziquantel and Pyrantel)
3. Cestex (Epsiprantel)
Term
How is Taenia controlled?
Definition
Preventing the primary host from eating the intermediate hosts
Term
What is another name for dipylidium caninum?
Definition
Flea Tapeworm
Term
What are the primary hosts for dipylidium caninum?
Definition
Cats and dogs
Term
What do dipylidium caninum eggs look like?
Definition
Cucumber seeds
Term
How many eggs can be in one dipylidium caninum packet?
Definition
Up to 20
Term
What is the intermediate host of dipylidium caninum?
Definition
Fleas and louse
Term
What are the signs of dipylidium caninum?
Definition
1. anal pruritis
2. weight loss
3. diarrhea
Term
How long does the life cycle of dipylidium caninum take?
Definition
6 months to 1 year
Term
Is dipylidium caninum zoonotic?
Definition
Yes
Term
What is another name for echinococcus granulosus?
Definition
Hydatid Tapeworm
Term
What is the primary host of echinococcus granulosus?
Definition
Dogs and coyotes
Term
What is the intermediate host of echinococcus granulosus?
Definition
Small rodents
Term
Are echinococcus granulosus segments visible in feces?
Definition
No, this tapeworm is only 2-5mm long and therefore is much too small
Term
Which cestode egg is echinococcus granulosus indistinguishable from?
Definition
Taenia
Term
Where do the hydatid cysts of echinococcus granulosus occur in the body?
Definition
The muscle and liver
Term
How is echinococcus transferred?
Definition
Ingestion of raw meat and feces
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