Tapeworms Flashcards by tcarlso 3

Are cestodes segmented?

Yes

How well did you know this?

Not at all

Perfectly

Do cestodes have sexes?

How well did you know this?

Not at all

Perfectly

How do cestodes get nutrients?

Absorb while in intestines

How well did you know this?

Not at all

Perfectly

Are trematodes segmented?

How well did you know this?

Not at all

Perfectly

Do treamtodes have sexes?

How well did you know this?

Not at all

Perfectly

What is distinct about treamtodes?

They have a gut

How well did you know this?

Not at all

Perfectly

Which type of worms have segmented bodies?

Cestodes

How well did you know this?

Not at all

Perfectly

Which type of worm have a primitive gut?

Trematodes

How well did you know this?

Not at all

Perfectly

What is the scientific name for trematodes?

Flukeworm

How well did you know this?

Not at all

Perfectly

Which worm has a complete digestive system?

Nematodes

How well did you know this?

Not at all

Perfectly

Which worm has separate sexes?

Nematodes

How well did you know this?

Not at all

Perfectly

What are the three basic structures to a cestode?

Scolex - “head” with suckers
Neck - where segment generated
Body

How well did you know this?

Not at all

Perfectly

What are individual segments of cestodes called?

Proglottids

How well did you know this?

Not at all

Perfectly

What are the three cestodes in which humans are the definitive host?

Taenia saginata (beef tapeworm)
Taenia Solium (pig tapeworm)
Diphyllobothrium lactum (fishtapeworm)

How well did you know this?

Not at all

Perfectly

What are the two cestodes in which humans are the intermediate host?

Echinococcus granulosus (dog tapeworm)
Taenia solium (pig tapeworm)

How well did you know this?

Not at all

Perfectly

What form are the tapeworms (cestodes) in if humans are the intermediate host?

Larval stages

How well did you know this?

Not at all

Perfectly

How do we acquire Taenia saginata?

eating beef

How well did you know this?

Not at all

Perfectly

What is the scientific name for the beef tapeworm?

Taeniae saginata

How well did you know this?

Not at all

Perfectly

What is the life cycle of taeniae saginata?

Eggs in human feces are ingested by cows.

How well did you know this?

Not at all

Perfectly

How does transmission of taeniae saginata occur?

Eating undercooked beef

How well did you know this?

Not at all

Perfectly

What are the symptoms of an infection with taeniae saginata?

Mild abdominal pain, feeling full. O/w asymptomatic

How well did you know this?

Not at all

Perfectly

How many tapeworms (cestodes) can humans have?

One, usually

How well did you know this?

Not at all

Perfectly

How do you diagnose Taeniae saginata?

Identification of proglottids or eggs in stool

How well did you know this?

Not at all

Perfectly

What is the scientific name for the pork tapeworm?

Taenia solium

How well did you know this?

Not at all

Perfectly

What are the two ways that humans can become infected with Taenia solium?

Intestinal form or cistercircosis, where there is disseminated larvae

What is the mode of transmission for taeniae solium?

Eating undercooked pork

What are the symptoms of the intestinal disease of taeniae saginata? How do they compare to the symptoms of taenia saginata?

Similar to beef tapeworm--feeling full, mild abdo pain, if any symptoms at all

What are the symptoms of cistercercosis?

Depends on the tissue being infected

What is the extra intestinal disease caused by taenia solium?

Cistercercosis or neurocistercircosis

Why is cistercercosis so morbid?

Creates space-filling lesions and induces local inflammation

How do you diagnose the intestinal form of taenia solium?

Eggs in stool

How do you diagnose cistercercosis?

MRI, CT scan, serology

What is the scientific name for the fish tapeworm?

Diphyllobothrium latum

What is the life cycle of Diphyllobothrium latum?

Eggs in stool passed into water, infect fishies

Is Diphyllobothrium latum from freshwater or saltwater fish?

Freshwater

What is the largest tapeworm that infects man?

Diphyllobothrium latum

How is Diphyllobothrium latum transmitted?

Eating undercooked fish

What are the symptoms of infection with Diphyllobothrium latum?

Usually asymptomatic, but can have n/v/d, abdo pain

What vitamin does Diphyllobothrium latum love, and cause a deficiency of? What does this cause?

B12 Macrocrytic anemia

Which tapeworm infection can have multiple worms infecting you at the same time?

Diphyllobothrium latum

How do you diagnose Diphyllobothrium latum?

Eggs in stool

What is the scientific name for the dog tapeworm?

Echinococcus granulosus

What is the scientific name for tapeworm?

Cestodes

How do we get Echinococcus granulosus?

Dog produces eggs in stool, we somehow ingest the eggs

What are the symptoms of Echinococcus granulosus? What is this similar to?

Lesions in the heart, brain, lungs etc. This is similar to cistercercosis

Are we the definitive host of Echinococcus granulosus?

No, dogs are

What is the name of the disease Echinococcus granulosus causes that is similar to cistercercosis?

Hydatid cyst disease

What are the symptoms of Hydatid cyst disease?

Depends on where the lesions form

What can happen if the Hydatid cysts rupture?

Anaphylactic shock

What is the scientific name for flukes?

Treamtodes

Are humans the definitive host for treamtodes (that we covered)?

Yes

Where are the trematodes that infect humans found?

Freshwater

The larval form of treamatodes live in what animal as an intermediate host?

Snails, but also fish

What is the fluke that infects human intestines?

Fasciolpsis buski

What is the life cycle of Fasciolpsis buski?

Human stool to snails to fish/water chesnuts

Where are Fasciolpsis buski infections usually found?

China, southeast asia, india

What are the reservoirs of Fasciolpsis buski?

Pigs, dogs, rabbits

What form do Fasciolpsis buski live in, in human intestines?

Adult forms that attach to the intestinal epithlium

How do you diagnose Fasciolpsis buski?

Stool

What are the two liver flukes?

Fasciola hepatica | Clonorchis sinesis

Fasciola hepatica and Clonorchis (O.P) sinesis are what type of worm?

Liver flukes (trematodes)

Where does Fasciola hepatica infect?

The bile duct

What is the intermediate host for Fasciola hepatica | Clonorchis sinesis?

Snails

What is the shape of fasciolopsis buski?

Leech

What are the symptoms of infection with Fasiolopsis buski? (light and heavy infection)

Light - intermittent diarrhea Heavy - Continuous diarrhea, intestinal hemorrhage, abscess formation

What happens when you ingest Fasciola hepatica?

The worm attaches to the intestinal wall, and burrows through

What is the intermittent host for fasciola hepatica?

Snail and freshwater

What is the intermittent host for clonorchis sinensis?

Fish or snails

What are the symptoms of an infection with Fasciola hepatica? (3)

Hepatomegaly, fever eosionphilia

How do you diagnose fasciola hepatica?

Stool analysis

What are the light and heavy infections of opisthorchis (clonorchis) sinensis?

``` Light = asymptomatic Heavy = Jaundice, hepatitis, ```

True or false: individuals infected with liver flukes are 10-15x more likely to develop bile duct CA

True

How does infection with opisthorchis (clonorchis) sinesis or fasciola hepatica increase the chances of developing bile duct CA?

Free oxygen radicals produced from inflammation

Which parasitic infection can cause an asthma attack when crawling up through the lungs?

Ascaris Lumbricoides

Which three parasites produce eosinophila?

Lumbricoides Strongyloidies Hookworms

Which parasitic infx can auto infect?

Strongyloides

Which parasitic infection is known to cause rectal prolapse in children due to tenesmus?

Tricarius Trichus (whipworm)