8/27 Flashcards

(57 cards)

1
Q

Bio safety Levels (BSL)

A

Provides a set of minimum standards for laboratory practices,
facilities, and equipment to be used when handling organisms at
each level

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2
Q

Refraction

A

Bending of light

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3
Q

Resolution

A

Clarity of an image

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4
Q

Resolving Power (Limit of Resolution)

A

Actual measurement of how far apart two points must be for the
microscope to view them as being separate

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5
Q

Trematodes (Flukes)

A

Schistosoma mansoni

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6
Q

Is the causative agent of

schistosomiasis

A

Trematodes (Flukes); Schistosoma mansoni

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7
Q

Found in Brazil, some Caribbean islands, Africa, and

parts of the Middle East

A

Trematodes (Flukes); Schistosoma mansoni

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8
Q
S
NAILS
serve as
primary
intermediate host between
humans
A

Trematodes (Flukes); Schistosoma mansoni

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9
Q

Infection occurs via contact with fecally contaminated water containing juveniles of the species
»Juveniles penetrate
skin
,

A

Trematodes (Flukes); Schistosoma mansoni

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10
Q
Signs
and s
ymptoms:
bloody diarrhea, abdominal pain,
fever, and lethargy
A

Trematodes (Flukes); Schistosoma mansoni

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11
Q

Dx. eggs in feces

A

Trematodes (Flukes); Schistosoma mansoni

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12
Q

Clonorchis sinensis

A
A.k.a.,
oriental liver fluke
(endemic in Japan, Korea,
Vietnam, China, and Taiwan)
-
Is the causative agent of
cl
onorchiasis
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13
Q

Infection occurs when
undercooked infected fish
is
ingested

A

Clonorchis sinensis

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14
Q
Adults migrate to liver bile ducts and begin laying
eggs
in approximately one month
»
Causes liver disease
A

Clonorchis sinensis

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15
Q

Note:
transmission of parasite from the mammal host
(cats, dogs, swine) to humans

A

Clonorchis sinensis

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16
Q

Signs and symptoms: biliary obstruction and
inflammation (cholangitis), and steatorrhea (presence of
fat in feces due to consumption of bile by parasi
te

A

Clonorchis sinensis

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17
Q
6
|
P a g e
-
Dx. eggs in feces
, eosinophilia, increased liver fun
ction
tests (LFTs), alkaline phosphatase, γ
-
glutamyl
transpeptidase, and bilirubin
A

Clonorchis sinensis

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18
Q

Cestodes (Tapeworms)

A

a
holdfast with many flattened sacs for a
body

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19
Q

Taenia saginata

A

Beef tapeworm

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20
Q

Scolex

A
serves
to
secure
tapeworm
into wall
of small intestine
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21
Q

Proglottid

A
segment of a
tapeworm,
containing both
male and female
reproductive
organs
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22
Q

Signs and symptoms: mild nausea, diarrhea, abdominal

pain, and headache

A

Cestodes (Tapeworms)

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23
Q

Dx. scolex and gravid proglottids in feces

A

Cestodes (Tapeworms); Taenia solium

24
Q

Taenia solium

A

Pork tapeworm

25
Signs and symptoms are more mild than T. saginata but are at risk of developing cysticercosis
Taenia solium
26
Dipylidium | caninum
a common parasite of dogs and cats involving the flea | as intermediate host
27
Echinococcus granulosus
causative | agent of human hydatidosis
28
Hymenolepis nana
most | common cestode in humans in the world
29
Nematodes (Roundworms | )
Ascaris lumbricoides
30
Is the causative agent of | ascariasis
Ascaris lumbricoides
31
``` Infection in humans occur when eggs in fecally contaminated soil or food are ingested ```
Ascaris lumbricoides
32
``` J uveniles emerge in intestine , penet rate its wall, and migrate to lungs and other tissues » After a period of development in lungs, juveniles move up the respiratory tree to esophagus and are swallowed again ```
Ascaris lumbricoides
33
Dx. eggs in feces
Ascaris lumbricoides
34
Enterobius vermiculari
Pinworm
35
Is the causative agent of enter o biasis
Enterobius vermiculari
36
Especially prevalent among people in institutions (such as orphanages and mental hospitals) because conditions favor fecal - oral transmission of parasite
Enterobius vermiculari
37
Dx. eggs collected on cellophane (scotch) tap
Enterobius vermiculari
38
Necator americanus
A.k.a., Hookworm
39
``` Infection occurs when juveniles penetrate skin , enter blood and travel to lungs ```
Necator americanus
40
Dx. eggs in feces
Necator americanus
41
Rx. albendazole
Necator americanus
42
Trichonella spiralis
Is the c ausative agent of trichinosis
43
Infection occurs from ingestion of raw or undercooked | pork and wild game having the larvae
Trichonella spiralis
44
S igns and symptoms: nausea, dyspepsia, diarrhea, muscle pain , fever, weakness; periorbital edema and splinter hemorrhage are classic signs
Trichonella spiralis
45
Dx. larvae in feces , eosinophilia, increased levels of creatine phosphokinase (CPK)
Trichonella spiralis
46
Rx. albendazole
Trichonella spiralis
47
Strongyloides stercoralis
intestinal | threadworm
48
Wuchereria bancrofti
filarial worm
49
Trichuris | trichiura
intestinal whipworm
50
Rx. praziquante
Taenia saginata; Taenia solium
51
Rx. Praziquantel
Clonorchis sinensis; Schistosoma mansoni
52
Trematodes aka?
flukes
53
Cestodes aka?
Tapeworms
54
Nematodes aka?
Roundworms
54
Cyst
Dormant stage, usually spherical
55
Trophozoites
Active stage, motile feeding stage
56
Protozoan a are unicellular eukaryotic heterotrophic microorganisms
True