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Parasitology - review > NEMATODES > Flashcards

NEMATODES Flashcards

1
Q

General characteristics of Nematodes

A
  1. Complete digestive tract
  2. Separate sexes
  3. Nonsegmented
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2
Q

soil transmitted nematodes

A

Unholy three (HAT)

  • Hookworms
  • Ascaris lumbricoides
  • Trichuris trichiura
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3
Q

heart-lung migration

A

ASH

  • Ascaris
  • Strongyloides
  • Hookworm
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4
Q

giant intestinal roundworm, lumbricus teres, eenworm

A

Ascaris lumbricoides

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5
Q

adult A.lumbricoides pathognomonic characteristic

A

trilobate (2 ventral, 1 dorsal lips)

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6
Q

male ascaris

A

ventrally curved posterior with two spicules

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7
Q

infective stage of Ascaris

A

embryonated egg

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8
Q

diagnostic stage of ascaris

A

unfertilized egg, fertilized egg, and adult

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9
Q

large roundworm of pig

A

Ascaris suum

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10
Q

toothed lip at the anterior end

A

Ascaris suum

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11
Q

(American hookworm,

American murderer, New world hookworm

A

Necator americanus

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12
Q

old world hookworm

A

Ancylostoma duodenale

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13
Q

cat hookworm

A

Ancylostoma braziliense

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14
Q

dog hookworm

A

Ancylostoma caninum

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15
Q

zoonotic hookworms

A

Ancylostoma ceylanicum, Uncinaria stenocephala

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16
Q

hookworm egg morphology

A

“MORULA BALL”

2 to 8 cell stages

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17
Q

infections in the GIT & lungs by

Ancylostoma spp

A

Wakana disease

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18
Q

infective form of hookwrorm

A

filariform larva

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19
Q

diagnostic stage of hookworm

A

fertilized egg

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20
Q

whipworm

A

Trichuris trichiura

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21
Q

Trichuris trichiura egg

A

Barrel/football/Japanese lantern with bipolar

plugs

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22
Q

Trichuris adult

A

thick and fleshy posterior and threadlike anterior

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23
Q

rectal prolapse

A

-T. trichiura

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24
Q

infective stage of trichuris

A

Embryonated eggs

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25
Q

Diagnostic stage of Trichuris

A

unembryonated eggs

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26
Q

pathogenesis of trichuris

A

blood mucoid diarrhea,

rectal prolapse

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27
Q

parthenogenic worm

A

Strongyloides stercoralis

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28
Q

threadworm, military worm

A

Strongyloides stercoralis

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29
Q

Strongyloides stercoralis infection/pathogenesis

A

Disseminated infection in

immunosuppressed patients/cochin china diarrhea

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30
Q

IS of strongyloides

A

filariform larva

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31
Q

DS of strongyloides

A

rhabditiform larva

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32
Q

swollen belly syndrome

A

Strongyloides fuelleborni

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33
Q

oxyuris, pinworm, seatworm, society

worm

A

Enterobius vermicularis

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34
Q

“D-shaped”, flattened on one side

A

Enterobius vermicularis

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35
Q

Enterobius vermicularis adult

A

lateral wings or cephalic alae

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36
Q

Enterobius vermicularis pathogenesis

A

Pruritus ani , Mother’s complex

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37
Q

IS of E. vermicularis

A

Embryonated egg

38
Q

DS of E. vermicularis

A

Embryonated egg

39
Q

mystery worm, pudoc worm

A

Capillaria philippinensis

40
Q

peanut/guitar-shaped, striated and flattened

bipolar plugs

A

Capillaria philippinens egg

41
Q

borborygmi, malabsorption

A

Capillaria philippinens

42
Q

IS of Capillaria philippinens

A

Filariform

43
Q

DS of C. philippinensis

44
Q

causes visceral larva migrans, adult has cephalic alae

A

Toxocara canis and cati

45
Q

Herring disease

A

Anisakis spp

46
Q

similar to hookworm egg but pointed

A

Trichostrongylus

47
Q

“dapaong tumor” or “turtle in the belly”

A

Oesophagostomum biforcum

48
Q

throny headed worms

A

Acanthocephala spp

49
Q

ingestion of encysted larva from rodent meat

A

Lagochilascaris minor:

50
Q

lymphatic filarial worm that doesn’t stain with giemsa

A

Brugia timori & W. bancrofti

51
Q

sheperd’s crook

A

Mansonella

streptocerca

52
Q

Tropical pulmonary eosinophilia

A

Weingarten’s syndrome

53
Q

Weingarten’s syndrome

A

Wuchereria bancrofti

54
Q

milky/clear colored fluid in retriperitoneal

areas.

A

Chylocoele

55
Q

W. bancrofti in scrotal lymphatics

Clear/straw colored fluid

56
Q

Meyers Kouwenaar Syndrome

A

microfilaria in spleen,

liver and lymphnode

57
Q

IS of W. bancrofti

A

3rd stage larva

58
Q

DS of W. bancrofti

A

microfilaria

59
Q

nocturnal, vector is Anopheles spp.,

cephalic space is 3:1, sheath unstained in giemsa

A

*Brugia timori:

60
Q

Brugia malayi involves _____ lymphatics.

a. UPPER
b. LOWER

61
Q

Brugia timori cephalic space is ___

62
Q

filarial worm unstained in Giemsa

A

W. bancrofti

63
Q

filarial worm that appear to be smoothly curved in blood film

A

W. bancrofti

64
Q

other names of Onchocerca vovulus

A

river blindness

blinding worm

65
Q

vector of Onchocerca vovulus

A

Simulium or
black fly or
buffalo gnat

66
Q

lizard/leopard skin, hanging groin pathogenesis of

A

Onchocerca vovulus

67
Q

IS of O.volvulus

A

3rd stage larva

68
Q

DS of O. volvulus

A

microfilaria

69
Q

loa loa other name

A

african eye worm or eye worm

70
Q

Loa loa vector

A 
Chrysops, 
Fruit fly, 
Mango fly, 
deer flies,
red flies, 
tabanid flies
71
Q

causative agent of Fugitive/Calabar swelling

72
Q

IS of Loa loa

A

3rd stage larva

73
Q

vector is Cullicoides / Midge

A

Mansonella spp.

74
Q

IS of Mansonella

A

3rd stage larva

75
Q

DS of Mansonella

A

microfilaria

76
Q

sheperd’s crook is described as

A

nuclei extends to tip of tail

77
Q

sheperd’s crook is a characteristic of what Mansonella spp.

A

Mansonella streptocerca

78
Q

microfilaria extends to top

A

M. perstans

79
Q

Ozzard’s filariasis

A

Mansonella ozzardi

80
Q

new world infections

A

Mansonella ozzardi

81
Q

tissue nematodes

A
  1. Parastrongylus cantonensis
  2. Trichinella spiralis
  3. Dracunculus medinensis
82
Q

other medically significant blood/tissue nematodes

A
  1. Dirofilaria immitis
  2. Gnathostoma spinigerum
  3. Syngamus laryngeus
  4. Thelazia callipaeda
83
Q

oriental eye worm

A

Thelazia callipaeda

84
Q

Syngamus laryngeus eggs is similar to

85
Q

Gnathostoma spinigerum requires how many Intermediate host

86
Q

vector of Dog heartworm

A

Aedes mosquito

87
Q

IS of D. immitis

88
Q

DS of D. immitis

A

adult worm

89
Q

rat lungworm, Angiostrongylus

cantonensis

A

Parastrongylus cantonensis

90
Q

BARBER’S POLE PATTERN OF UTERUS

A

P. cantonensis

Parasitology - review (6 decks)

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