parasit euclid Flashcards
(149 cards)
1
Q
when naming organisms, the Genus should start with a _ and species with a _
A
capital letter, small letter
2
Q
it is a symbiotic relationship in which 1 organism benefits from the other without causing any harm
A
commensalism
3
Q
parasite that can multiply in fecal matter outside the body
A
coprophilic parasite
4
Q
host in which parasite undergoes an arrested development stage
A
paratenic host
5
Q
source of infection is known as the _
A
reservoir
6
Q
parasite that lays eggs which hatch AFTER leaving a host
A
oviparous
7
Q
parasite that lays eggs which hatch BEFORE leaving a host
A
ovoviviparous
8
Q
parasite that lays larva instead of egg
A
viviparous
9
Q
parasitology slides and photographs are used for _ purposes
A
QC
10
Q
a clean, dry, waterproof container with a _ lid is an appropriate collection container for a stool sample
A
tight-fitting
11
Q
CDC recommends that _ or more stool samples, collected on separate days, be examined for O & P test
A
3
12
Q
best specimen for fecal antigen test
A
fresh or frozen stool
13
Q
beyond 1 hour, stool samples must be _
A
refrigerated
14
Q
how long can fecal samples be stored in a refrigerator
A
24 hours
15
Q
diarrheic stools must be examined within _ after passage
A
30 mins to 1 hour
16
Q
trophozoites are very fragile and could be _ at refrigerator temperature
A
destroyed
17
Q
it interfere with identification of parasites, especially protozoan cysts
A
mineral oil droplets
18
Q
mercury-containing fixative used to preserve parasite in stool specimens
A
polyvinyl alcohol, Schaudinn’s fluid
19
Q
preservative to be employed with the trichome stain
A
polyvinyl alcohol
20
Q
stain recommended for intestinal coccidia
A
modified acid fast stain
21
Q
preservative in direct fecal smear
A
formalin
22
Q
vector of Ascaris lumbricoides
A
cockcroach
23
Q
ascaris egg without mamillary coating
A
decorticated egg
24
Q
this adult female roundworm migrates out of the anus & deposits eggs on perianal area
A
E. vermicularis
25
peripheral blood picture in Loeffler's syndrome
peripheral eosinophilia
26
heart-to-lung migration
ASH
ascaris, strongyloides, hookworm
27
unholy three of roundworms
HAT
hookworm, ascaris, trichuris
28
severe itching / allergic reaction at the site of skin penetration by hookworm filariform larvae
ground itch
29
feeding stage of nematodes (hookworm, threadworm)
rhabditiform larva
30
infective stage of nematodes (hookworm, threadworm)
filariform larva
31
intestinal roundworm demonstrated as rhabditiform larvae in fecal specimen
threadworm
32
helminth that induces a microcytic, hypochromic anemia in its host
hookworm
33
rhabditiform larvae of S. stercoralis = _ buccal cavity and _ genital primordium
short, large
34
rhabditiform larvae of hookworm = _ buccal cavity and _ genital primordium
long, short
35
intestinal nematode capable of vertical transmission & congenital infections
Ancylostoma duodenale
36
significant eosinophilia and muscle pain may occur after ingestion of meat infected with
Trichinella spiralis
37
agent of cutaneous larva migrans or creeping eruption
dog hookworm (A. caninum)
38
agent of visceral larva migrans
Toxocara canis & T. cati
39
pre-larval stage of filarial worms
microfilaria
40
most common identified species of filarial worms, sheathed and nocturnal
Wuchereria bancrofti
41
definitive host and reservoir of W. bancrofti
humans
42
filarial worm similar to W. bancrofti that may cause lymphadenopathy
Brugia malayi
43
Dracunculus infections cause ulcers that _
on water contact, release larvae
44
agent of river blindness
Onchocerca volvulus
45
vector of O. volvulus
black fly (Simulium spp.)
46
objective used to detect microfilariae
LPO
47
scientific name of the head of a tapeworm
scolex
48
part of cestodes used for attachment to the intestinal walls; anchoring organ of cestodes
scolex
49
region of growth or proliferation for cestodes
neck
50
when man becomes intermediate host for T. solium, this disease is manifested
cysticercosis
51
cestode capable of causing cysticercosis
T. solium
52
humans serve as _ host of T. solium
definitive (or accidental intermediate)
53
life span of T. solium
up to 25 years
54
new species of Taenia discovered in Taiwan; 3rd Taenia spp.; Taiwan Taenia
Taenia asiatica
55
T. asiatica resembles _, but the cysticerci is close to _
T. saginata, T. solium
56
the only operculated cestode egg that infects humans
D. latum
57
parasite that causes megaloblastic anemia
D. latum
58
life span of D. latum
25 years
59
mistaken as adult D. latum
spirometra
60
found in the intermediate host of Echinococcus granulosus
hydatid cyst
61
diagnostic stage of Echinococcus spp. in humans
hydatid cyst
62
it is used for sterilization when removing a hydatid cyst
formalin
63
definitive host of Echinococcus multilocularis
foxes, coyotes, dogs
64
fluke found in sheep and cattle
Fasciola hepatica
65
fluke that causes vitamin B12 deficiency and intestinal obstruction
Fasciolopsis buski
66
trematode that can cause cholangiocarcinoma
C. sinensis, O. viverrini, Fasciola
67
most flukes are hermaphroditic (have both sexes), except for _
Schistosoma (separate sexes)
68
stage of schistosomes that goes out of the snail to go to water
cercaria
69
Schistosoma spp. infects human by _
skin penetration
70
Katayama fever is associated with what parasite
Schistosomes
71
Swimmer's itch or cercarial dermatitis is caused by _
cercaria of schistosomes
72
habitat of S. japonicum inside human host
superior mesenteric vein (small intestine)
73
schistosome egg recovered in urine
S. haematobium
74
what is a schistosomule
cercaria minus tail
75
operculated ovum seen in bloody sputum with Charcot-Leyden crystals
P. westermani
76
adult of P. westermani resides on what organ
lungs
77
how to prevent paragonimiasis
avoid eating raw freshwater crabs
78
treatment for P. westermani infection
praziquantel
79
avoiding consumption of aquatic plants is a way to prevent infection with _
Fasciolopsis and Fasciola
80
nonmotile, nonfeeding and infective stage of amebae
cyst
81
motile, reproducing and feeding (vegetative) stage of protozoa
trophozoite
82
objective used when viewing trichome stained smear of protozoa
OIO
83
color of trophozoite glycogen using trichrome stain
colorless
84
color of trophozoite nucleus using trichrome stain
red-purple
85
color of Charcot-Leyden crystal using trichrome stain
bright red
86
color of chromatoidal bodies using trichrome stain
bright to red
87
pathogenic amoebic trophozoite that ingests RBCs of its host
Entamoeba histolytica
88
point of differentiation between E. histolytica and E. hartmanni
size
89
mature cyst of E. histolytica has how many nuclei
4
90
mature cyst of E. coli has how many nuclei
up to 8
91
T. trichiura infection provides a good site for what protozoan
E. histolytica
92
SREHP stand for _
serine-rich E. histolytica protein
93
amoeba with a "ground glass" cytoplasm
E. histolytica / E. dispar
94
sluggish, non-directional motility, has a "dirty cytoplasm"
Entamoeba coli
95
amoeba with a characteristic "basket nucleus" and large glycogen vacuole
E. butschlii
96
amoeba that contains ingested neutrophils
E. gingivalis
97
amoeba inhabiting the CNS enter the body through the _
nasal mucosa
98
double-walled cyst with outer wrinkled wall & inner polygonal wall
Acanthamoeba spp.
99
agent of primary amoebic meningoencephalitis (PAM)
Naegleria fowleri
100
best staining procedures for Naegleria and Acanthamoeba
H&E, Wright stain
101
in what specimen are acanthamoeba and naegleria usually found
CSF
102
protozoan often mistaken as cysts of amebae
Blastocystis hominis
103
the motility of Paramecium is attributed to its _
cilia
104
the only ciliate pathogenic in humans
Balantidium coli
105
associated with steatorrhea and Gay bowel syndrome
G. lamblia
106
intestinal flagellate trophozoite with sucking disc, 2 nuclei, 8 flagella, 1 axostyle
G. lamblia
107
the only bilaterally symmetrical protozoan is _
G. lamblia
108
causes "crypt" hypertrophy in the duodenum & subsequently diarrhea
G. lamblia
109
protozoan with an undulating membrane
trichomonas, trypanosoma
110
what does D. fragilis have in common with T. vaginalis
neither has a cyst form
111
best technique to identify Dientamoeba fragilis in stool
trichrome-stained smear
112
specimen used for rapid diagnosis on T. vaginalis
vaginal swab
113
definitive host of Plasmodium spp.
female Anopheles mosquito
114
during a blood meal, the female Anopheles mosquito ingests what malarial stage
gametocyte
115
infective stage of malarial parasite to the vector
gametocyte
116
infective stage of the malarial parasite to humans
sporozoite
117
principal vector of malaria in the Philippines
Anopheles minimus flavirostris
118
Plasmodium spp. responsible for 90% of malaria cases
P. falciparum & P. vivax
119
Plasmodium spp. that may cause relapse of infection
P. vivax & P. ovale
120
hypnozoites may be seen in malarial infections caused by _
P. vivax & P. ovale
121
paroxysmal cycle of P. knowlesi
24 hours
122
RBC inclusion produced by P. knowlesi
Sinton & Mulligan's stippling
123
type of blood specimen preferred for preparing blood smears for protozoans
finger puncture
124
stain of choice for diagnosis of malarial thick and thin smear
Giemsa stain
125
when performing thick and thin blood smears for malaria, which smear is fixed
thin smear
126
venipuncture blood is NOT recommended for _ (3)
malaria
babesia
hemoflagellates
127
to detect stippling, prepare blood films within _ after being drawn
30 mins to 1 hr
128
type of microscope used for quantitative buffy coat method for malaria
fluorescent
129
oocysts of this parasite can be recovered in cat feces
T. gondii
130
patient with cerebral calcification must be tested with _
toxoplasma antibody titer
130
parasite that can undergo autofluorescence
cyclospora
131
important cause of chorioretinitis
toxoplasma
131
how is T. cruzi transmitted
bite of reduviid bug
131
agent of Rhodesian disease / East African sleeping sickness
T. brucei rhodesiense
131
agent of Gambian disease / West African sleeping sickness
T. brucei gambiense
132
vector of African sleeping sickness
Glossina spp. (Tsetse fly)
132
this parasite has the following manifestation: WBCs with amastigotes inside
Leishmania
132
specimen for detection of microsporidia
fresh stool or formalin-fixed stool
132
intracellular form of blood and tissue flagellates
leishmanial
132
vector of T. brucei rhodesiense
G. morsitans, G. pallidipes, G. swynnertoni
132
agent of Chagas' disease
T. cruzi
132
infective stage of Leishmania spp. to humans
promastigote
133
vector of T. brucei gambiense
G. palpalis, G. fuscipes, G. tachinoides
133
agent of Kala-azar / black fever / dumdum fever / visceral leishmaniasis
Leishmania donovani
133
agent of "crabs"
phtirus pubis (ectoparasite)
133
found within reticuloendothelial cells (3)
L. donovani
H. capsulatum
T. gondii
133
scabies is a type of (infection / infestation)
infestation
133
aka "head louse"
pediculus humanus capitis
133
wingless arthropods (4)
ticks, bedbugs, mites, spiders
