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Phasmids Flashcards

1
Q

This parasite has a cylindrical body and a cuticle with three name outer layers which is made up of ?

A

Enterobius vermicularis; collagen

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2
Q

Synonym for E.vermicularis

A

Oxyuris vermicularis

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3
Q

Common name of E.v?

A

Pin worm, seat worm

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4
Q

Main habitat of e.v

A

Cecum and appendix

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5
Q

Definitive host of e,v

A

Man

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6
Q

Reservoir host of e.v

A

Cat and dogs

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7
Q

Infectuve stage of e.v

A

Embryonated egg

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8
Q

This worm (?)will usually mold how many times?

A

E.vn 4 times

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9
Q

Ova of (?) with elongated and ovoidal with one side flattened

A

E.v

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10
Q

D apperance of what parasite

A

E.v

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11
Q

How many layers are in the ova of E. v?

A

5 layers

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12
Q

In E.v ova the Inner embronated poriton layer are composed of?

A

Lipoidal layer
 3 middle layers (known as membrana
lucida)

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13
Q

E.v ova where this layer coats the egg and important in attachment and life cycle of the parasite

A

Albuminous membrane

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14
Q

Larvae will differ from the adults only in that they
are smaller and coiled but same morphological structure

A

E.v

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15
Q

E. v egg measures?

A

50-60mmx20-30mm

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16
Q

E.v distinguishing charac of male aduly

A

Spindle shape with an hour glass shape esophagus and cephalic ale

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17
Q

E. v male has coiled tail for?

A

Copulation

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18
Q

E.v male has spicule that is?

A

Conspicuous or obvious

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19
Q

E.v female distinguishing charac?

A

Alae that has wing like appendage

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20
Q

Female E.v that has wing like appendage is located at?

A

Anterior expansion of the body wall

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21
Q

Both male and female adult E. vermicularis have how many lips surrounding the circular mouth?

A

3

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22
Q

Disease of E.v

A

Enterobiasis, Oxyuriasis

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23
Q

Mot of E.v

A

thumb sucking- anus to mouth! Fecal oral

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24
Q

The juvenile/ egg of E.v will hatch where?

A

Small intestine

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25
Q

The adults of E.v will migrate where?

A

Large intestine

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26
Q

The gravid female of E.v will migrate where?

A

Perianal area

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27
Q

Very rare MOT of E.v

A

Via inhalation

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28
Q

. The larvae upon hatching migrate back to the

A

Large intestine

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29
Q

In E.v, how many are asymptomatic?

A

1/3

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30
Q

Pruritus ani is seen in

A

Enterobius vermicularis

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31
Q

This treatment for e,v has side effects

A

Pyrantel pamoate

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32
Q

Treatment for e.v that Cannot be used for pregnant women

A

Mebendazole

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33
Q

Have been reported in more than 150 countries across the globe, particularly in tropic, sub-tropic, and temperate regions

A

Ascaris lumbricoides

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34
Q

Approximately 1.5B people worldwide are infected of this
parasite, 4M of home live in US

A

A.l

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35
Q

The highly durable eggs of A.l can remain dormant in the soil for up to how many years?

A

10 yrs

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36
Q

Common name of A.l?

A

Giant Intestinal Roundworm

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37
Q

Largest among intestinal nematodes affecting man measuring
15-35 cm in length in adulthood

A

A.l

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38
Q

with smooth,
finely striated cuticle and the head is provided with three conspicuous lips
Picture: Male and Female Adultworm wherein male is smaller compared to that of the female
MALE:
 10-31 cm
 Ventrically curved posterior end with 2 spicules
 Genitalia: composed of a single, long tortuous tubule/ ywisted
tubule
FEMALE
 35cmlongx3-6mm
 Straight posterior end
 Paired reproductive organs located in the 2/3 of the body
 Oviparous
 Gravid uterus: 200, 000 eggs
 Lacks circular muscles, the only muscle bunch being
longitudinal and the wrm uses muscular activity to remain in
the intestinal lumen of the host
 Lacks circulatory system and its digestive, excretory, nervous
and reproductive systems are also suspended within the pseudosolen

A
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39
Q

Parasite (?) with smooth body,
finely striated cuticle and the head is provided with how many conspicuous lips?

A

A.l ; 3

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40
Q

In A.l this is made for attachment aside from muscular activity

A

three conspicuous lips

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41
Q

Parasite(?) with Ventrically curved posterior end with how many spicules?

A

A.l ; 2 spicules

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42
Q

Genitalia: composed of a single, long tortuous tubule/ ywisted
tubule

A

A.l

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43
Q

A.l male or female with Straight posterior end

A

Female A.l

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44
Q

A.l female Paired reproductive organs located in the — of the body

A

2/3

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45
Q

A.l worm lacks what msucle

A

Circular muscle

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46
Q

A.l worm’s muscle bands are being?

A

Longitudinal

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47
Q

A.l female forms lacks what organ system?

A

Circulatory system

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48
Q

A.l type of worm that os Longer and narrower

A

Unfertilized

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49
Q

A.l ova that is Elongated and larger
 Finer shell with irregular coating of albumin

A

Unfertilized

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50
Q

A.l ova that is Completely filled with amorphous mass of protoplasm with
refractile granules

A

Unfertilized

51
Q

A.l ova that has Has albuminoid layer (absent in old specimens)and Chorionic
layer or true shell

A

Unfertilized

52
Q

A.l ova is Broadly ovoidal and thick

A

Fertilized

53
Q

Secretory product of the egg of A.l

A

Chorionic/ true shell

54
Q

Fertilization membrane of the ova of A.l

A

Vitelline layer

55
Q

For attachment to the host

A

Protein coat/Albuminous layer

56
Q

Ascaris lumbricoides also contains a —- and —— in its ova?

A

Mass of coarse and lecithin granules in its ova

57
Q

Infective stage of A.l

A

EMBRYONATED OVA

58
Q

Ova of A.l that contains larva

A

EMBRYONATED OVA

59
Q

Ova of A.l that Occur in old specimen

A

DECORTICATED OVA

60
Q

Ova of A.l that has Outer mamillated shell is absent

A

DECORTICATED OVA

61
Q

Ascaris lumbricoides is more resistant than______ eggs but still the eggs of A.l are susceptible to _______.

A

Trichuris; dessication or drying

62
Q

Suitable environment for A.l eggs

A

moist, loose soil with moderate shade

63
Q

A.l Eggs are destroyed by ?

A

Direct sunlight

64
Q

A.l eggs within 15 hours are killed at temperature of?

A

40 degrees cel

65
Q

A.l eggs perish within an hour at what temp

A

50 degrees cel

66
Q

A.l eggs Exposure to what range of temp has no effect on ascaris eggs but fatal to trichuris egg

A

-8 to -12 degrees cel

67
Q

Eggs of this parasite are resistant to chemical disinfectants and can
withstand temporary immersion in strong chemicals

68
Q

Definitive host of A.l

69
Q

Main habitat of A.l

A

Small intestine; jejunum

70
Q

Disease of A.l

A

Ascariasis, Dooryard or Backyard infection

71
Q

This worm produces a pepsin inhibitor to prevent host
enzymes from digesting it and uses muscular activity to avoid
being excreted.

72
Q

Loeffler’s syndrome is seen how many weeks after ingestion of egg

73
Q

Loeffler’s syndrome is for?

74
Q

may occur with reinfection of loeffler’s syndrome

A

Allergic reaction

75
Q

Parasite characterized by Protein malnutrition in children with heavy infections and poor
diet

76
Q

Two phases in ascariasis?

A

BLOOD-LUNG MIGRATION PHASE OF THE LARVAE

INTESTINAL PHASE OF THE ADULTS

77
Q

These clinical manifestation in bloodmlung migrationnphase of the larvae is called

A

Loeffler’s syndrome

78
Q

Phase in ascariases that has Vague abdominal pains or intermittent colic, especially in children

A

Intestinal phase of the adults

79
Q

most common complication of Ascaris lumbricoides infection),

A

Biliary ascariasis

80
Q

Washing solution of A.l?

A

aqueous iodine solution (200 parts/ million)mfor 15 mins

81
Q

This is the only species naturally pathogenic to man.

82
Q

Common name of S.s

A

Threadworm

83
Q

It is characterized by free living rhabditiform and parasitic
filariform stages.

84
Q

S.s adult distinguishing charac

A

Buccal capsule, no teeth but has a crown chitinous leaf-like processes

85
Q

2 phases of development of S.s

A

Parasitic and free living

86
Q

It inhabits the intestines of the host and the parasitic life cycle would begin when the _____ will infect humans through the skin.

A

Filariform larva

87
Q

Phase of S,s that is parthenogenetic

A

Parasitic phase

88
Q

Parasitic phase has what form of S.s

A

Filariform larva

89
Q

Phase of S.s that isnfound on the soil

A

Free living

90
Q

Phase of S.s wherein The female worm lays embryonated eggs which develop into what form

A

Rhabditiform larvae

91
Q

So when the conditions in the soil becomes unfavorable,
rhabditiform larvae develops into_____ which causes infections to ,an

A

Filariform larva

92
Q

Form of S.s that cause infection to man

A

Filariform larva

93
Q

Adult female of S.s is shorter or larger?

94
Q

Feeding stage of S.s

A

Rhabditiform

95
Q

Non feeding stage of S,s

A

Filariform

96
Q

Flask-shaped and stout esophagus form of S.s

A

Rhabditiform

97
Q

Long esophagus form of S.s

A

Filariform

98
Q

Infective stage of S.s

A

Filariform

99
Q

Thin shelled, transparent, resembles a Chinese lantern

100
Q

It is similar to a hookworm ova

101
Q

S.s is not found in feces except in?

A

Diarrhea and hyperperistalsis

102
Q

contains a fully developed embryo

A

Ova of S.s

103
Q

Definitive host of S.s

104
Q

Main habitat of S.s

A

Duodenum of man

105
Q

Disease of S.s

A

Cochin- china diarrhea, strongyloidiasis,
strongyloidosis

106
Q

Migration of the larve of S.s

A

bronchia verminous pneumonia

107
Q

Phase of infection of S.s that caused by the filariform larvae

A

Invasion of the skin

108
Q

s.s This is called your larval migration phase where the lungs are destroyed causing
lowbar pneumonia with haemorrhage.

A

Migration of larvae through the body

109
Q

Migration of larvae through the body causws

A

Lowbar pneumonia with haemorrhage

110
Q

S.s greatest number is found in what regions in the body

A

Duodenal and upper jejunal regions

111
Q

S.s diagnosis wherein We determine the presence of hookworm like eggs
in the duodenal drainage fluid

A

Enterotest

112
Q

Drug for s.s that is ovidical & larvicidal

A

Thiabendazole

113
Q

400 mg/day for 3 days (treatment of parasite. S.s

A

Albendazole

114
Q

Life span of span of Strongyloides
DIFFERENTIATION OF STRONGYLOIDES STERCORALIS
Feeding stage
Rhabditiform
Flask-shaped and stout esophagus
Buccal cavity is present
Buccal cavity is present  Infective stage
 Ova:
lantern
o o
Thin shelled, transparent, resembles a Chinese
Figure: Stercoralis rhabditiform larvae
It is similar to a hookworm ova
o Not found in feces except in diarrhea and
hyperistalsis
o And contains a fully developed embryo
 Definitive Host: man
 Main habitat: duodenum of man
 Infective Stage: Filariform larvae
 Disease: Cochin- china diarrhea, strongyloidiasis,
strongyloidosis
 Asymptomatic in light infection
Stercoralis

115
Q

span of Strongyloides
DIFFERENTIATION OF STRONGYLOIDES STERCORALIS
Feeding stage
Rhabditiform
Flask-shaped and stout esophagus
Buccal cavity is present
Buccal cavity is present  Infective stage
 Ova:
lantern
o o
Thin shelled, transparent, resembles a Chinese
Figure: Stercoralis rhabditiform larvae
It is similar to a hookworm ova
o Not found in feces except in diarrhea and
hyperistalsis
o And contains a fully developed embryo
 Definitive Host: man
 Main habitat: duodenum of man
 Infective Stage: Filariform larvae
 Disease: Cochin- china diarrhea, strongyloidiasis,
strongyloidosis
 Asymptomatic in light infection
Stercoralis

116
Q

Life span of s.s

117
Q

E.v female lays how many eggs

A

4,672 to 16,888 eggs

118
Q

secondary to larval spread and intestinal leakage: s.s

A

Bacterial infection

119
Q

A.l digestive, excretory, nervous
and reproductive systems are also suspended within the

A

Pseudosolen

120
Q

gravid female after laying their eggs in the
perianal area goes back through the anus to the large intestine. The larvae upon hatching migrate back to the large intestine

A

Retroinfection

121
Q

The esophagus of S.s occupies_____of the _____ part

A

1/3;anterior

122
Q

Male E.v measures

A

2.5 mm long by 0.1-0.2mm wide

123
Q

Female e.v. Measures?

A

8-13mm long by 0.3-0.5mm wide

124
Q

A.l adult measures?

A

15-35cm in length

PARASIT (29 decks)

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