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
2
Q
Synonym for E.vermicularis
A
Oxyuris vermicularis
3
Q
Common name of E.v?
A
Pin worm, seat worm
4
Q
Main habitat of e.v
A
Cecum and appendix
5
Q
Definitive host of e,v
A
Man
6
Q
Reservoir host of e.v
A
Cat and dogs
7
Q
Infectuve stage of e.v
A
Embryonated egg
8
Q
This worm (?)will usually mold how many times?
A
E.vn 4 times
9
Q
Ova of (?) with elongated and ovoidal with one side flattened
A
E.v
10
Q
D apperance of what parasite
A
E.v
11
Q
How many layers are in the ova of E. v?
A
5 layers
12
Q
In E.v ova the Inner embronated poriton layer are composed of?
A
Lipoidal layer
3 middle layers (known as membrana
lucida)
13
Q
E.v ova where this layer coats the egg and important in attachment and life cycle of the parasite
A
Albuminous membrane
14
Q
Larvae will differ from the adults only in that they
are smaller and coiled but same morphological structure
A
E.v
15
Q
E. v egg measures?
A
50-60mmx20-30mm
16
Q
E.v distinguishing charac of male aduly
A
Spindle shape with an hour glass shape esophagus and cephalic ale
17
Q
E. v male has coiled tail for?
A
Copulation
18
Q
E.v male has spicule that is?
A
Conspicuous or obvious
19
Q
E.v female distinguishing charac?
A
Alae that has wing like appendage
20
Q
Female E.v that has wing like appendage is located at?
A
Anterior expansion of the body wall
21
Q
Both male and female adult E. vermicularis have how many lips surrounding the circular mouth?
A
3
22
Q
Disease of E.v
A
Enterobiasis, Oxyuriasis
23
Q
Mot of E.v
A
thumb sucking- anus to mouth! Fecal oral
24
Q
The juvenile/ egg of E.v will hatch where?
A
Small intestine
25
The adults of E.v will migrate where?
Large intestine
26
The gravid female of E.v will migrate where?
Perianal area
27
Very rare MOT of E.v
Via inhalation
28
. The larvae upon hatching migrate back to the
Large intestine
29
In E.v, how many are asymptomatic?
1/3
30
Pruritus ani is seen in
Enterobius vermicularis
31
This treatment for e,v has side effects
Pyrantel pamoate
32
Treatment for e.v that Cannot be used for pregnant women
Mebendazole
33
Have been reported in more than 150 countries across the globe, particularly in tropic, sub-tropic, and temperate regions
Ascaris lumbricoides
34
Approximately 1.5B people worldwide are infected of this
parasite, 4M of home live in US
A.l
35
The highly durable eggs of A.l can remain dormant in the soil for up to how many years?
10 yrs
36
Common name of A.l?
Giant Intestinal Roundworm
37
Largest among intestinal nematodes affecting man measuring
15-35 cm in length in adulthood
A.l
38
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
39
Parasite (?) with smooth body,
finely striated cuticle and the head is provided with how many conspicuous lips?
A.l ; 3
40
In A.l this is made for attachment aside from muscular activity
three conspicuous lips
41
Parasite(?) with Ventrically curved posterior end with how many spicules?
A.l ; 2 spicules
42
Genitalia: composed of a single, long tortuous tubule/ ywisted
tubule
A.l
43
A.l male or female with Straight posterior end
Female A.l
44
A.l female Paired reproductive organs located in the — of the body
2/3
45
A.l worm lacks what msucle
Circular muscle
46
A.l worm’s muscle bands are being?
Longitudinal
47
A.l female forms lacks what organ system?
Circulatory system
48
A.l type of worm that os Longer and narrower
Unfertilized
49
A.l ova that is Elongated and larger
Finer shell with irregular coating of albumin
Unfertilized
50
A.l ova that is Completely filled with amorphous mass of protoplasm with
refractile granules
Unfertilized
51
A.l ova that has Has albuminoid layer (absent in old specimens)and Chorionic
layer or true shell
Unfertilized
52
A.l ova is Broadly ovoidal and thick
Fertilized
53
Secretory product of the egg of A.l
Chorionic/ true shell
54
Fertilization membrane of the ova of A.l
Vitelline layer
55
For attachment to the host
Protein coat/Albuminous layer
56
Ascaris lumbricoides also contains a —- and —— in its ova?
Mass of coarse and lecithin granules in its ova
57
Infective stage of A.l
EMBRYONATED OVA
58
Ova of A.l that contains larva
EMBRYONATED OVA
59
Ova of A.l that Occur in old specimen
DECORTICATED OVA
60
Ova of A.l that has Outer mamillated shell is absent
DECORTICATED OVA
61
Ascaris lumbricoides is more resistant than______ eggs but still the eggs of A.l are susceptible to _______.
Trichuris; dessication or drying
62
Suitable environment for A.l eggs
moist, loose soil with moderate shade
63
A.l Eggs are destroyed by ?
Direct sunlight
64
A.l eggs within 15 hours are killed at temperature of?
40 degrees cel
65
A.l eggs perish within an hour at what temp
50 degrees cel
66
A.l eggs Exposure to what range of temp has no effect on ascaris eggs but fatal to trichuris egg
-8 to -12 degrees cel
67
Eggs of this parasite are resistant to chemical disinfectants and can
withstand temporary immersion in strong chemicals
A.l
68
Definitive host of A.l
Man
69
Main habitat of A.l
Small intestine; jejunum
70
Disease of A.l
Ascariasis, Dooryard or Backyard infection
71
This worm produces a pepsin inhibitor to prevent host
enzymes from digesting it and uses muscular activity to avoid
being excreted.
A.l
72
Loeffler’s syndrome is seen how many weeks after ingestion of egg
1-2
73
Loeffler’s syndrome is for?
A.l
74
may occur with reinfection of loeffler’s syndrome
Allergic reaction
75
Parasite characterized by Protein malnutrition in children with heavy infections and poor
diet
A.l
76
Two phases in ascariasis?
BLOOD-LUNG MIGRATION PHASE OF THE LARVAE
INTESTINAL PHASE OF THE ADULTS
77
These clinical manifestation in bloodmlung migrationnphase of the larvae is called
Loeffler’s syndrome
78
Phase in ascariases that has Vague abdominal pains or intermittent colic, especially in children
Intestinal phase of the adults
79
most common complication of Ascaris lumbricoides infection),
Biliary ascariasis
80
Washing solution of A.l?
aqueous iodine solution (200 parts/ million)mfor 15 mins
81
This is the only species naturally pathogenic to man.
S.s
82
Common name of S.s
Threadworm
83
It is characterized by free living rhabditiform and parasitic
filariform stages.
S.s
84
S.s adult distinguishing charac
Buccal capsule, no teeth but has a crown chitinous leaf-like processes
85
2 phases of development of S.s
Parasitic and free living
86
It inhabits the intestines of the host and the parasitic life cycle would begin when the _____ will infect humans through the skin.
Filariform larva
87
Phase of S,s that is parthenogenetic
Parasitic phase
88
Parasitic phase has what form of S.s
Filariform larva
89
Phase of S.s that isnfound on the soil
Free living
90
Phase of S.s wherein The female worm lays embryonated eggs which develop into what form
Rhabditiform larvae
91
So when the conditions in the soil becomes unfavorable,
rhabditiform larvae develops into_____ which causes infections to ,an
Filariform larva
92
Form of S.s that cause infection to man
Filariform larva
93
Adult female of S.s is shorter or larger?
Shorter
94
Feeding stage of S.s
Rhabditiform
95
Non feeding stage of S,s
Filariform
96
Flask-shaped and stout esophagus form of S.s
Rhabditiform
97
Long esophagus form of S.s
Filariform
98
Infective stage of S.s
Filariform
99
Thin shelled, transparent, resembles a Chinese lantern
S.s
100
It is similar to a hookworm ova
S.s
101
S.s is not found in feces except in?
Diarrhea and hyperperistalsis
102
contains a fully developed embryo
Ova of S.s
103
Definitive host of S.s
Man
104
Main habitat of S.s
Duodenum of man
105
Disease of S.s
Cochin- china diarrhea, strongyloidiasis,
strongyloidosis
106
Migration of the larve of S.s
bronchia verminous pneumonia
107
Phase of infection of S.s that caused by the filariform larvae
Invasion of the skin
108
s.s This is called your larval migration phase where the lungs are destroyed causing
lowbar pneumonia with haemorrhage.
Migration of larvae through the body
109
Migration of larvae through the body causws
Lowbar pneumonia with haemorrhage
110
S.s greatest number is found in what regions in the body
Duodenal and upper jejunal regions
111
S.s diagnosis wherein We determine the presence of hookworm like eggs
in the duodenal drainage fluid
Enterotest
112
Drug for s.s that is ovidical & larvicidal
Thiabendazole
113
400 mg/day for 3 days (treatment of parasite. S.s
Albendazole
114
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
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
Life span of s.s
20-30 yrs
117
E.v female lays how many eggs
4,672 to 16,888 eggs
118
secondary to larval spread and intestinal leakage: s.s
Bacterial infection
119
A.l digestive, excretory, nervous
and reproductive systems are also suspended within the
Pseudosolen
120
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
Retroinfection
121
The esophagus of S.s occupies_____of the _____ part
1/3;anterior
122
Male E.v measures
2.5 mm long by 0.1-0.2mm wide
123
Female e.v. Measures?
8-13mm long by 0.3-0.5mm wide
124
A.l adult measures?
15-35cm in length
