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Parasitology midterms > Midterm III (helminthology) (Cestodes) > Flashcards

Midterm III (helminthology) (Cestodes) Flashcards

1
Q
A
  • Moniezia benedeni*
  • -* each proglottis has two sets of genitals which open on both sides
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2
Q
A
  • Anoplocephala perfoliata*
  • each proglottis has one set of genitalis which all open on the same side
  • testicles are scattered as small pale spots on the opposite side
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3
Q
A
  • Moniezia benedeni* egg
  • Quadrilateral egg shape
  • oncosphaera is eccentric
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4
Q
A
  • Moniezia expansa* egg
  • triangular egg shape
  • oncospharea is usually central
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5
Q
A
  • Anoplocephala perfoliata* egg
  • semicircular shape

contains 6 hooked oncosphera inside

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6
Q
A
  • Dipylidium caninum* (cucumber/ flea tapeworm) mature segment
  • genital openings on both sides
  • 2 ovaries in the centre
  • testicles fill the central part of the proglottis
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7
Q
A
  • Dipylidium spp.* cocoon
  • oncospheres fill the centre
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8
Q
A
  • Diphyllobothrium latum* (broad/ fish tapeworm) scolex
  • longitudinal, oval slit (Bothridium)
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9
Q
A
  • Diphyllobothrium latum* (broad/ fish tapeworm) Proglottis
  • 1 set of gentialia

genital openings in the midline

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10
Q
A
  • Diphyllobothrium spp.* eggs
  • resemble the reatures of trematode eggs
  • no oncosphere
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11
Q
A
  • Taenia spp. scolex*
    • strong hooks on the rostellum*
    • impressions of 2 suckers*
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12
Q
A
  • taenia spp.*: proglottis
  • genital organs open on each side in irregular alternating positions
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13
Q
A
  • taenia spp.* mature segment
  • mass of scattered testicles
  • two longitudinal excretory canals
  • 2 genital ducts parallel to the genital opening
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14
Q
A
  • taenia spp.* Gravid segment
  • branches of uterus are filled with white eggs
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15
Q
A
  • Taenia spp.* egg
  • thick refrective eggshell
  • six hooked oncosphere (not all hooks are visible)
  • colour: white-brown
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16
Q
A

Taenia spp. cystericus larva

liver tissue

  • you can tell it snt echinococcus because there is no surrounding CT
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17
Q
A

Taenia spp. cysticerci

cut surface of skeletal muscle

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18
Q
A

taenia multiceps

coenurus larvae

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19
Q
A
  • echinococcus granulosus*
  • scolex with rostellum and suckers
  • Short neck
  • immature segment and mature segment
  • Gravid segment
  • centrally aggregated eggs
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20
Q
A
  • echinococcus hydatidosus*
  • spherical protoscolicies attached to the wall of inner broad capsules
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21
Q
A

protoscolex of echinococcus granulosus

  • the number of hooks is equal to the number of hooks on the adult’s scolex
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22
Q
A
  • Echinococcus multiocularis*: cavernous structure
  • sterile larvae not containing any protosolices
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23
Q

what is the difference between cysticercus psisiformis & echinococcus interlocularis in necropsy?

A

cysticercus pisiformis: lesions appear on the liver

Echinococcus interlocularis: lesions appear inside the liver

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24
Q
A

dipyldium caninum

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25
Q
A

Dipylidium caninum: dried segments

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26
Q
A

anoplocephala perfoliata

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27
Q
A

moniezia expansa

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28
Q
A

mesocestoides spp.

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29
Q
A

anoplocephala perfoliata: worm

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30
Q
A

moniezia expansa

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31
Q
A

dipylidium caninum

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32
Q
A

anocephala perfoliata

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33
Q
A

cystericus bovis

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34
Q
A

cystericus pisiformis

note the lesions appear “on” the liver

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35
Q
A

(taenia) cysticercus pisiformis: rostellum

36
Q
A

mesocestoides lineatus

37
Q
A

cysticercus tenuicollis: on a liver

38
Q
A

taenia pisiformis: gravid section

39
Q
A

cysticercosis in the rabbit’s liver

40
Q
A

taenia saginata: egg

41
Q
A

cysticercus: heart muscle

42
Q
A

taenia pisiformis: gravid proglottis

43
Q
A
  • taenia pisiformis/ cysticercus pisiformis?*
  • -* liver and mesentery of rabbts and hares
  • taenia hydatigena/ cysticercus tenuicollis?*
    • liver and mesentery of ruminants and swines*
44
Q
A

mesocestoides lineatus: segment

45
Q
A

mature cysticerci on the peritoneal surface

46
Q
A
  • cysticercus cervi*
  • skeletal muscles of deer
47
Q
A

cysticercus pisiformis: rabbit liver

48
Q
A

echinocossus multilocularis larvae:

echinococcus alveolaris

49
Q
A

taenia type eggs

50
Q
A

echinococcus multilocularis : hyatid cyst with protoscolices inside

51
Q
A

echinococcus granulosus: protoscolex

52
Q
A

echinocossus & dicrocoelium

liver sample

53
Q
A
  • echinococcus interlocularis*
  • the cysts are in the liver
54
Q
A

(taenia) cysticercus crassiceps

55
Q
A

echinococcus hyatidosus: larvae

56
Q
A

cysticercus longicollis: larvae

57
Q
A

echinococcus granulosus: cyst

58
Q
A

cysticercus tenuicollis: larvae

59
Q
A

echinococcus: hyadtid cysts in the liver

60
Q
A

Echinococcus cysts

61
Q
A

taenia serialis

62
Q
A

echinococcus: hyatid cysts (heart)

63
Q
A

taenia spp. cysticercus

64
Q
A

echinococcus: hyatid cyst (liver)

65
Q
A

taenia multiceps

66
Q
A

taenia saginata: cysticercus bovis

67
Q
A

taenia hydatigena

68
Q
A

taenia multiceps: coenurus larvae

69
Q
A

taenia hydatigena: cysticerci

70
Q
A

taenia saginata: worm and larvae

71
Q
A

taenia pisiformis

72
Q
A

taenia pisiformis

73
Q
A

taenia pisiformis: eggs

74
Q
A

cysticercus tenuicollis

(taenia hydatigena larval form)

75
Q
A

strobilocercus fasciolaris

(taenia taeniaeformis larval form)

76
Q
A

cysticercus bovis

77
Q
A

cysticercus larvae in the brain

78
Q
A

cysticercus longicollis

(taenia crassiceps larval form)

79
Q
A

Coenurus serialis

(taenia serialis larval form)

found in CT & muscles

80
Q
A

echinococcus granulosus

81
Q
A

cysticercus pisiformis

(taenia pisiformis larvae)

82
Q
A

cysticercus cellulosae

(taenia solium larval form)

83
Q
A

taenia pisiformis

84
Q
A

Taenia serialis

85
Q
A

cysticercus tenuicollis

(taenia hydatigena larval form)

Parasitology midterms (5 decks)

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