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BVSc2 AD1 > Tapeworms and flukes > Flashcards

Tapeworms and flukes Flashcards

1
Q

What is the clinical name for taepworms?

A

Cestodes

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2
Q

What is the head of a tapeworm called?

A

Scolex

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3
Q

What is the body of a tapeworm called?

A

Proglottid

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4
Q

What are the sections of a tapeworm body called?

A

Stroblia

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5
Q

What kind of life cycle do tapeworms usually have?

A

Indirect

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6
Q

What animals are affected by taenia?

A

Carnivores and grazing animals

dogs are definitive host

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7
Q

Where do adult tapeworms live?

A

In the intestines

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8
Q

What is the taenia life cycle?

A 
Canine ingests cyst containing scolex
adult tapeworm in intestines
eggs passed onto pasture
intermediate host ingests eggs
larvae migrate through intestinal mucosa
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9
Q

what is the simplest tapeworm cyst called? and what is it?

A

cysticercus

singe scolex

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10
Q

What is a fluid filled tapeworm cyst in germinal epithelium called?

A

Hydatid

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11
Q

What is inside a hydatid?

A

Multiple scolices surrounded by fluid

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12
Q

What is the common name for taenia?

A

Ribbon worm

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13
Q

what is the name for the cyst in tapeworms?

A

metacestode

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14
Q

What symptoms do taenia hydatigena cause?

A

Damage to liver as migrate through then form cysts

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15
Q

What is the unarmed tapeworm called?

A

Taenia saginata

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16
Q

What animal is the metcestode of taenia saginata in?

A

cows

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17
Q

What type of metacestodes are taenia?

A

Cystercercus

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18
Q

What type of metacetodes are echinococcus granulosus?

A

Hydatid

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19
Q

What do echinococcus look like?

A

Tiny thin tapeworms with 3/4 proglottid segments

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20
Q

What clinical symptoms does echinococcus granulosus cause?

A

liver and lung lesions

distended abdomen

21
Q

What are the hosts of echinococcus granulosus?

A

Fox/dog - definitive

most animals and humans - intermediate

22
Q

What are the hosts of echinococcus multicocularis?

A

fox/dog - definitive

rodents and humans- intermediate host

23
Q

What is the main tapeworm in horses?

A

Anoplocephala perfoliata

24
Q

Where are anoplocephala perfoliata located?

A

Ilio-caeco-colic junction

25
Q

What are the symptoms of anoplocephala perfoliata?

A

Ulceration, colic, intestinal obstruction

26
Q

What animal is the metacestode of anoplocephala perfoliata in?

A

oribatic foliage mites

27
Q

What is the most common tapeworm in dogs and cats?

A

cucumber seed tapeworm

dipylidium caninum

28
Q

What is the intermediate host of dipylidium caninum?

A

Ctenocephalides fleas and trichodectes lice

29
Q

What does dipylidium caninum cause in dogs and cats?

A

Anal discomfort

not very pathogenic

30
Q

What is a large tapeworm in cows and sheep?

A

Monezia expansa

31
Q

What is the intermediate host of monezia?

A

mites

32
Q

What does monezia cause?

A

Intestinal obstruction

not very pathogenic

33
Q

What is the clinical name for flukes?

A

Trematodes

34
Q

What is the clinical name for liver fluke?

A

Fasciola hepatica

35
Q

What animals do fasciola hepatica infect?

A

Cattle, sheep horses, rabbits, humans

36
Q

What is the intermediate host of fasciola hepatica?

A

snail

galba truncatula

37
Q

What is a cause for concern with liver fluke?

A

Increases susceptibility for other diseases
black disease
salmonella
TB

38
Q

What is the life cycle of a liver fluke?

A

liver fluke in bile duct in liver
Eggs passed in faeces
Miracidium find snails
a sporucyst forms in the snail
then a redia forms and migrates to digestive gland
then cercaria exits snail and swims through water
these encyst on grass to become infectious metacercaria

39
Q

What is the mobile larvae of liver fluke called?

A

Miracidium

40
Q

What is the larval stage which migrates through the digestive gland called?

A

Redia

41
Q

What is the larval stage than can swim through water called?

A

Cercaria

42
Q

what is the infectious stage of liver fluke called?

A

Metacercaria

43
Q

What is massive hepatic haemorrhage called from liver fluke?

A

Acute fasciolosis

44
Q

What causes acute fasciolosis?

A

Ingestion of massive amounts of metacercaria

45
Q

How does liver fluke evade immune system?

A

Regularly sheds its outer tegument glycocalyx
Also cathepsin-L cleaves immunoglobulins at hinge region
eosinophils vulnerable

46
Q

What increases the epidemiology of liver fluke?

A

wet boggy areas

47
Q

How do you control fasciolosis?

A

Anthelmentics

drain boggy areas

48
Q

Where can liver fluke be found in humans?

A

Anterior chamber of the eye

BVSc2 AD1 (12 decks)

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