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Parasitology > Lab test 7 > Flashcards

Lab test 7 Flashcards

1
Q

Tapeworm detected by the naked eye

A

All of them

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2
Q

How do you diagnose metacestodes?

A

Necropsy

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3
Q

How do we differentiate the eggs of Echinococcus granulosa and Taenia multiceps?

A

Cannot differentiate

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4
Q

If you detect Taenia type eggs in a faecal sample of a dog, it could be infected with:

A

Taenia multiceps
Dipylidium canium
Echinococcus granulosus

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5
Q

How do you detect cystocercus bovis?

A

Necropsy and meat inspection

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6
Q

Which species occur in dogs?

A

F. Hepatica
T. ovis
D. latum

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7
Q

The eggs of this parasite cannot be detected:

A

E. alveolaris
C. pisiformis
C. cellulose
Since they are metacestodes

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8
Q

Which form is infective in sheep?

A

Cistecercoid in Orbatidae

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9
Q

Which statement is true?

A

Proglottids do not pass permanently with the faeces

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10
Q

Size of Taenia-type eggs?

A

30-40 micrometer

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11
Q

What statement is true for a segment of a cestode?

A

It can produce eggs. it is hermaphroditic

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12
Q

Which tapeworm can infect humans?

A

Diphyllobothrium

Dipylidium

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13
Q

Which tapeworm produce eggs with angulated shape?

A

Moniezia

Anoplocephala

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14
Q

What organ is missing from the body of an adult cestode?

A

Digestive tract

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15
Q

This kind of cysticercus occurs in skeletal muscles

A

C. ovis
C. cellulosae
C. cervi

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16
Q

What do the fertile cysticerci of Taenia worms contain?

A

One scolex

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17
Q

In case of accidental ingestions this larvae can infect humans:

A

Cysticercus bovis

Cysticercus cellulosae

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18
Q

What kind of tapeworms are in the bile ducts of sheep?

A

None. they are in the intestine

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19
Q

Symptoms by Moniezia can be seen

A

Under 6 months old

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20
Q

Shape of Moniezia benedeni

A

Quadrangular

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21
Q

How do we recognise eggs of M. expansa?

A

Triangular shape

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22
Q

What kind of tapeworm can be found in the bile duct of cattle?

A

None. In cattle and sheep, tapeworms are not found in the bile ducts

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23
Q

Which statement is not true?

A

Prepatent period is 6 months in case of Moniezia

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24
Q

How many suckers does the scolex of Moniezia expansa have?

A

4 suckers

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25
Q

What does the eggs of Moniezia benedeni contain?

A

Quadrangular eggs that contrain a 6 hooked oncosphaera inside

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26
Q

What does the mature proglottid of a Moniezia benedeni worm contain?

A

Many testicles

Two sets of sexual organs

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27
Q

What does the sterile hydatid cyst contain?

A

Tissue fluid only

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28
Q

Where can we find genital opening on the mature segment of a Taenia species

A

On one side

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29
Q

In cestodes, what is the gravid segment?

A

Egg

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30
Q

Which has/have two sets of genitalia (in each segment=

A

Moniezia
Dipylidium
Taenia

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31
Q

Where can you find tapeworms during the necropsy of a horse?

A

In the small and large intestine

32
Q

Proudmann method detect

A

Anoplocephala/Equine tapeworms

33
Q

What shape do the eggs of Anopleucephala have?

A

Horse-shoe shape

34
Q

What is the intermediate host of Anoplocephala worms?

A

Box-mites

35
Q

These tapeworms can occur in large intestines

A

Anoplocephala

36
Q

What can you detect in the faeces of a dog infected with D- caninum?

A

Cocoon, egg and gravid segments. Flotation of large egg capsules (cacoons) from faeces. each egg contains a 6 hooked oncosphaera inside. usually the whole gravid segments are shed by the faeces: they are pinkish, 2-3 mm long and able to crawl for a short distance.

37
Q

A few mm long, active worm found in the faeces of a cat

A

D. caninum

38
Q

Cacoon found in infection caused by

A

D. caninum

39
Q

Worm eggs not examined by flotation

A

D. caninum. Since the cacoon is much heavier, it is done with sedimentation or flotation in extremely dense fluid

40
Q

Tapeworm species found in a 6 week old puppy

A

D. caninum

41
Q

Elongated proglottids of Diphylidium have two sets of genitalia. True or false?

A

True

42
Q

Cestode with double genitalia

A

Diphylidium caninum

43
Q

Whatis the best way to detect flea tapeworm eggs in faeces

A

Flotation

44
Q

The species of this genus can act as intermediate hosts for Diphylidium

A

Ctenocephalides fleas and rarely hair lice

45
Q

What is the size of egg cacoon of flea tapeworms?

A

about 500 microns

46
Q

These tapeworms have armed rostellum

A

Dipylidium

47
Q

Inside of D. latum eggs

A

Zygote

48
Q

Which animals are susceptible for Diphyllobothrium infection?

A

Bear, dog, cat (fish eating mammals, including humans)

49
Q

Which animals aren’t susceptible for Diphyllobothrium infection?

A

Cattle

50
Q

How many hooks does the scolex of Diphyllobothrium worms have?

A

Zero

51
Q

what kind of works produce eggs without onchosphere?

A

Diphyllobothrium

52
Q

Is T. ovis common in sheep flocks of the EU?

A

No, T. ovis effects dogs, not sheep

53
Q

Host of T. ovis

A

Dogs

54
Q

Which is hepatophilous?

A

T. pisiformis

55
Q

Which can occur in sheep?

A

Cysticercus ovis

56
Q

Cysticercus pistiformis can occur in

A

Rabbits and hares

57
Q

Which animal can carry Taenia taeniaformis infection?

A

Rat

58
Q

Intermediate host for Taenia pisiformis?

A

Hare and rabbit

59
Q

Where do you find T. solium adults in dogs?

A

Not found in dogs. only found in humans

60
Q

Where can you find T. saginata in the red fox?

A

Not found. it is a human tapeworm

61
Q

This metacestode can develop into adult in humans:

A

Cystercus cellulosae

62
Q

The species of this genus can act as intermediate host for Taenia saginata

A

Bos

63
Q

Aduly Taenia saginata worms have:

A

Scolex

64
Q

The species of this genus can act as intermediate host for Taenia solium

A

Homo

65
Q

Size of Echinococcus granulosa eggs?

A

50 um as they are taenia type eggs

66
Q

In dog, E. alveolaris can be found where?

A

In the liver

67
Q

E. granulosus and E. alveolaris can both occur in humans

A

Only E. alveolaris

68
Q

E. multilocularis can be detected in infected humans with

A

No method, since not found in humans

69
Q

What is the most effective drug against Echinococcus

A

Praziquantel/Epsiquantel

70
Q

What is the metacestode form of E. granulosa

A

E. hydatidosus

71
Q

What is the metacestode form of E. multilocularis?

A

E. alveolaris

72
Q

Size of Echinococcus hydatidosus protosolex?

A

100 um

73
Q

Echinococcus worms have

A

Rostellum, hooks

74
Q

How many proglottids does the Echinococcus multilocularis have?

A

5

75
Q

What do the fertile caverns of Echinococcus multilocilaris contain?

A

Protoscolices and gelatinous mass

76
Q

What is the size of an Echinococcus worm?

A

Around 3-6 millimeters

Parasitology (9 decks)

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