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para mt 3 > Midterm III - Helminthology 1 [INCOMPLETE] > Flashcards

Midterm III - Helminthology 1 [INCOMPLETE] Flashcards

1
Q
A

Trematoda: Egg

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2
Q
A

Trematoda: Miracidium (released from egg)

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3
Q
A

Trematoda: Sporocyst

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4
Q
A

Trematoda: Sporocyst containing rediae

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5
Q
A

Trematoda: Cercaria

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6
Q
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Trematoda: Cercaria

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7
Q
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Trematoda: Full cercaria

schistosoma

Typical form of the blood flukes

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8
Q

[White spheres]

A

Trematoda: Metacercariae

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9
Q
A

Fasciola hepatica (Common liver fluke)

Haemorrhagic tracks in a sheep’s liver

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10
Q
A

Fasciola hepatica (Common liver fluke)

Haemorrhagic tracks in a sheep’s liver

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11
Q
A

Fasciola hepatica (Common liver fluke)

Identifying features:

  • Dorsoventrally flattened/Leaf-like
  • Grey-brown
  • Conical head shape (with shoulders)
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12
Q
A

Fasciola hepatica (Common liver fluke)

Identifying features:

  • Dorsoventrally flattened/Leaf-like
  • Grey-brown
  • Conical head shape (with shoulders)

[See the yellow eggs]

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13
Q
A

Fasciola hepatica (Common liver fluke)

Identifying features:

  • Dorsoventrally flattened/Leaf-like
  • Grey-brown
  • Conical head shape (with shoulders)

[Notice the yellow eggs]

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14
Q

*MIDTERM*

A

*Fasciola hepatica (Common liver fluke)*

Identifying features:

  • Digested blood in the intestine = Liver fluke
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15
Q
A

Fasciola hepatica (Common liver fluke)

Identifying features:

  • Cross-section showing intestine with digested blood
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16
Q
A

Fasciola hepatica (Common liver fluke)

Identifying features:

  • Enlarged gall bladder & bile duct
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17
Q
A

Fasciola hepatica (Common liver fluke)

Identifying features:

  • Enlarged bile duct wall
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18
Q
A

Radix labiata

Occasional host of Fasciola

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19
Q
A

Galba truncatula

Most common host for Fasciola & Calicophoron spp.

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20
Q
A

Rumen fluke

Either Paramphistomum or Calicophoron spp.

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21
Q
A

Rumen fluke

Either Paramphistomum or Calicophoron spp.

  • 1 large ventral sucker; 1 smaller oral sucker
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22
Q
A

Rumen fluke

Either Paramphistomum or Calicophoron spp.

Identifying features:

  • 1 large ventral sucker
  • 1 smaller oral sucker
  • Genital opening in the centre
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23
Q
A

Rumen fluke [Ventral end] Cross section

Either Paramphistomum or Calicophoron spp.

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24
Q
A

Planorbid snail

Intermediate host for Paramhistomum spp.

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25
Q
A

Effect of young rumen flukes moving in the s. intestine mucosa

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26
Q
A

Developing rumen flukes on the abomasal wall

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27
Q
A

Rumen fluke [Among ruminal papillae]

Either Paramphistomum or Calicophoron spp.

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28
Q
A

Rumen fluke: Non-embryonated egg

Either Paramphistomum or Calicophoron spp.

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29
Q
A

Dicrocoelium dendriticum (Lancet fluke)

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30
Q
A

Dicrocoelium dendriticum (Lancet fluke)

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31
Q
A

Dicrocoelium dendriticum (Lancet fluke)

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32
Q
A

Dicrocoelium dendriticum (Lancet fluke)

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33
Q
A

Dicrocoelium dendriticum (Lancet fluke): Egg

Hard & thick shell - Detect with floatation

34
Q
A

Dicrocoelium dendriticum (Lancet fluke): Eggs

35
Q
A

Dicrocoelium dendriticum (Lancet fluke): Cercaria

Found in slime balls on grass

36
Q
A

Dicrocoelium dendriticum (Lancet fluke): Metacercaria

37
Q
A

Dicrocoelium dendriticum (Lancet fluke)

Chronic dicrocoeliasis: Thickened bile ducts

38
Q
A

Dicrocoelium dendriticum (Lancet fluke)

Chronic dicrocoeliasis: Thickened bile ducts

39
Q
A

Dicrocoelium dendriticum (Lancet fluke)

This can be identified by:

  • Presence of eggs
40
Q

How to distinguish between Liver fluke and Lancet fluke?

A
  • Liver fluke: Visible digested blood in the intestine
  • Lancet fluke: Visible eggs present
41
Q
A

Moniezia benedeni

Identifying features:

  • Each proglottis has 2 sets of genitals which open on both sides
42
Q
A

Moniezia benedeni: Egg

Identifying features:

  • Quadrangular egg shape
  • Oncosphaera is eccentric
43
Q
A

Moniezia expansa: Egg

Identifying features:

  • Triangular egg shape
  • Oncosphaera is central
44
Q
A

Anoplocephala perfoliata: Egg

ooooor monezia expansa?

heste egg er brødskive form

Identifying features:

  • Semicircular shape
  • Contains 6 hooked oncosphera inside
45
Q
A

Dipylidium caninum (Flea/cucumber tapeworm): Mature segment

Identifying features:

  • Genital openings on both sides (impressions on the surface)
  • 2 x Ovaries in the centre
  • Testicles fill the central part of the proglottis
46
Q
A

Dipylidium spp.: Cocoon

Identifying features:

  • Oncospheres fill the centre
47
Q
A

Diphyllobothrium spp: Eggs

Identifying features:

  • Resemble the features of Trematode eggs
  • No oncosphera
48
Q
A

Taenia spp.: Rostellum

Identifying features:

  • Strong hooks on the rostellum [Ø T. saginata]
  • Impressions of 2 x suckers (acetabuli)
49
Q
A

Taenia spp.: Mature segment

Identifying features:

  • Mass of scattered testicles
  • 2 longitudinal excretory canals
  • 2 genital ducts parallel to the genital opening
50
Q
A

Taenia spp.: Gravid segment

Identifying features:

  • Branches of uterus are filled with white eggs
51
Q
A

Taenia spp.: Egg

Identifying features:

  • Thick refractive eggshell
  • Six-hooked oncosphere (not all hooks are visible)
  • Colour: White-brown
52
Q
A

Taenia spp.: Cysticerci

Cut surface of skeletal muscle

53
Q
A

Taenia multiceps: Coenurus cerebralis larva

White solices can be seen on the opened wall

54
Q
A

Echinococcus granulosus: Adult

Identifying features:

  • Scolex with a rostellum & suckers
  • Short neck
  • Immature segment & mature segment
  • Gravid segment
  • Centrally-aggregated eggs
55
Q
A

Echinococcus hyatidosus

Identifying features:

  • Spherical protoscolices attached to the wall of inner broad capsules
56
Q

Difference between a Cysticercus pisiformis & an Eccinococcus interlocularis necropsy specimin.

A
  • Cysticercus pisiformis: Lesions appear “on” the liver
  • Eccinococcus interlocularis: Lesions appear inside the liver
57
Q
A

Cysticercus bovis

58
Q
A
  • Cysticercus pisiformis*
  • Note the lesions appear “*on” the liver
59
Q
A

Mesocestoides lineatus

60
Q
A

Cysticercus tenuicollis: On a liver

61
Q
A

Taenia pisiformis: Gravid segment

62
Q
A

Taenia saginata: Egg

63
Q
A

Cysticercus: Heart muscle

64
Q
A

Taenia /cysticerus pisiformis

Haemorrhagic tracks in the liver

65
Q
A

Mature cysticerci on the peritoneal surface

cysticercus pisiformis

66
Q
A
  • Cysticercus cellulosae or bovis*
  • taenia solium or saginata*

In the heart muscle

67
Q
A

Cysticercus cervi

68
Q
A

Echinococcus multilocularis larva: Echinococcus alveolaris

69
Q
A

Taenia-type eggs

70
Q
A

Echinococcosis interlocularis

Note the cysts are in the liver

71
Q
A

Echinococcus hyatidosus: Larvae

72
Q
A

Taenia pisiformis

73
Q
A

Taenia pisiformis

74
Q
A

Taenia pisiformis: Eggs

75
Q
A

Taenia saginata: Eggs

76
Q
A

Cysticercus tenuicollis

(Taenia hydatigena larval form)

77
Q
A

Strobilocercus fasciolaris

(Taenis taeniaeformis larval form)

78
Q
A
  • Cysticercus longicollis*
  • (Taenia crassiceps larval form)*
79
Q
A

Coenurus cerebralis

(Taenia multiceps larval form)

80
Q
A

Echinococcus granulosus

81
Q
A

Echinococcus granulosus

para mt 3 (2 decks)

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