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Tapeworms Flashcards

1
Q

Are cestodes segmented?

A

Yes

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2
Q

Do cestodes have sexes?

A

No

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3
Q

How do cestodes get nutrients?

A

Absorb while in intestines

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4
Q

Are trematodes segmented?

A

No

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5
Q

Do treamtodes have sexes?

A

No

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6
Q

What is distinct about treamtodes?

A

They have a gut

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7
Q

Which type of worms have segmented bodies?

A

Cestodes

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8
Q

Which type of worm have a primitive gut?

A

Trematodes

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9
Q

What is the scientific name for trematodes?

A

Flukeworm

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10
Q

Which worm has a complete digestive system?

A

Nematodes

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11
Q

Which worm has separate sexes?

A

Nematodes

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12
Q

What are the three basic structures to a cestode?

A

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

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13
Q

What are individual segments of cestodes called?

A

Proglottids

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14
Q

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

A 
Taenia saginata (beef tapeworm)
Taenia Solium (pig tapeworm)
Diphyllobothrium lactum (fishtapeworm)
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15
Q

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

A 
Echinococcus granulosus (dog tapeworm)
Taenia solium (pig tapeworm)
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16
Q

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

A

Larval stages

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17
Q

How do we acquire Taenia saginata?

A

eating beef

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18
Q

What is the scientific name for the beef tapeworm?

A

Taeniae saginata

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19
Q

What is the life cycle of taeniae saginata?

A

Eggs in human feces are ingested by cows.

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20
Q

How does transmission of taeniae saginata occur?

A

Eating undercooked beef

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21
Q

What are the symptoms of an infection with taeniae saginata?

A

Mild abdominal pain, feeling full. O/w asymptomatic

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22
Q

How many tapeworms (cestodes) can humans have?

A

One, usually

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23
Q

How do you diagnose Taeniae saginata?

A

Identification of proglottids or eggs in stool

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24
Q

What is the scientific name for the pork tapeworm?

A

Taenia solium

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25
Q

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

A

Intestinal form or cistercircosis, where there is disseminated larvae

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26
Q

What is the mode of transmission for taeniae solium?

A

Eating undercooked pork

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27
Q

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

A

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

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28
Q

What are the symptoms of cistercercosis?

A

Depends on the tissue being infected

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29
Q

What is the extra intestinal disease caused by taenia solium?

A

Cistercercosis or neurocistercircosis

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30
Q

Why is cistercercosis so morbid?

A

Creates space-filling lesions and induces local inflammation

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31
Q

How do you diagnose the intestinal form of taenia solium?

A

Eggs in stool

32
Q

How do you diagnose cistercercosis?

A

MRI, CT scan, serology

33
Q

What is the scientific name for the fish tapeworm?

A

Diphyllobothrium latum

34
Q

What is the life cycle of Diphyllobothrium latum?

A

Eggs in stool passed into water, infect fishies

35
Q

Is Diphyllobothrium latum from freshwater or saltwater fish?

A

Freshwater

36
Q

What is the largest tapeworm that infects man?

A

Diphyllobothrium latum

37
Q

How is Diphyllobothrium latum transmitted?

A

Eating undercooked fish

38
Q

What are the symptoms of infection with Diphyllobothrium latum?

A

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

39
Q

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

A

B12 Macrocrytic anemia

40
Q

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

A

Diphyllobothrium latum

41
Q

How do you diagnose Diphyllobothrium latum?

A

Eggs in stool

42
Q

What is the scientific name for the dog tapeworm?

A

Echinococcus granulosus

43
Q

What is the scientific name for tapeworm?

44
Q

How do we get Echinococcus granulosus?

A

Dog produces eggs in stool, we somehow ingest the eggs

45
Q

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

A

Lesions in the heart, brain, lungs etc.

This is similar to cistercercosis

46
Q

Are we the definitive host of Echinococcus granulosus?

A

No, dogs are

47
Q

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

A

Hydatid cyst disease

48
Q

What are the symptoms of Hydatid cyst disease?

A

Depends on where the lesions form

49
Q

What can happen if the Hydatid cysts rupture?

A

Anaphylactic shock

50
Q

What is the scientific name for flukes?

A

Treamtodes

51
Q

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

52
Q

Where are the trematodes that infect humans found?

A

Freshwater

53
Q

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

A

Snails, but also fish

54
Q

What is the fluke that infects human intestines?

A

Fasciolpsis buski

55
Q

What is the life cycle of Fasciolpsis buski?

A

Human stool to snails to fish/water chesnuts

56
Q

Where are Fasciolpsis buski infections usually found?

A

China, southeast asia, india

57
Q

What are the reservoirs of Fasciolpsis buski?

A

Pigs, dogs, rabbits

58
Q

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

A

Adult forms that attach to the intestinal epithlium

59
Q

How do you diagnose Fasciolpsis buski?

60
Q

What are the two liver flukes?

A

Fasciola hepatica

Clonorchis sinesis

61
Q

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

A

Liver flukes (trematodes)

62
Q

Where does Fasciola hepatica infect?

A

The bile duct

63
Q

What is the intermediate host for Fasciola hepatica

Clonorchis sinesis?

64
Q

What is the shape of fasciolopsis buski?

65
Q

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

A

Light - intermittent diarrhea

Heavy - Continuous diarrhea, intestinal hemorrhage, abscess formation

66
Q

What happens when you ingest Fasciola hepatica?

A

The worm attaches to the intestinal wall, and burrows through

67
Q

What is the intermittent host for fasciola hepatica?

A

Snail and freshwater

68
Q

What is the intermittent host for clonorchis sinensis?

A

Fish or snails

69
Q

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

A

Hepatomegaly, fever eosionphilia

70
Q

How do you diagnose fasciola hepatica?

A

Stool analysis

71
Q

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

A 
Light = asymptomatic
Heavy = Jaundice, hepatitis,
72
Q

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

73
Q

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

A

Free oxygen radicals produced from inflammation

74
Q

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

A

Ascaris Lumbricoides

75
Q

Which three parasites produce eosinophila?

A

Lumbricoides
Strongyloidies
Hookworms

76
Q

Which parasitic infx can auto infect?

A

Strongyloides

77
Q

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

A

Tricarius Trichus (whipworm)

Microbio (50 decks)

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