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Flashcards in 8/27 Deck (57)
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1

Bio safety Levels (BSL)

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

2

Refraction

Bending of light

3

Resolution

Clarity of an image

4

Resolving Power (Limit of Resolution)

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

5

Trematodes (Flukes)

Schistosoma mansoni

6

Is the causative agent of
schistosomiasis

Trematodes (Flukes); Schistosoma mansoni

7

Found in Brazil, some Caribbean islands, Africa, and
parts of the Middle East

Trematodes (Flukes); Schistosoma mansoni

8

S
NAILS
serve as
primary
intermediate host between
humans

Trematodes (Flukes); Schistosoma mansoni

9

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

Trematodes (Flukes); Schistosoma mansoni

10

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

Trematodes (Flukes); Schistosoma mansoni

11

Dx. eggs in feces

Trematodes (Flukes); Schistosoma mansoni

12

Clonorchis sinensis

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

13

Infection occurs when
undercooked infected fish
is
ingested

Clonorchis sinensis

14

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

Clonorchis sinensis

15

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

Clonorchis sinensis

16

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

Clonorchis sinensis

17

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

Clonorchis sinensis

18

Cestodes (Tapeworms)

a
holdfast with many flattened sacs for a
body

19

Taenia saginata

Beef tapeworm

20

Scolex

serves
to
secure
tapeworm
into wall
of small intestine

21

Proglottid

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

22

Signs and symptoms: mild nausea, diarrhea, abdominal
pain, and headache

Cestodes (Tapeworms)

23

Dx. scolex and gravid proglottids in feces

Cestodes (Tapeworms); Taenia solium

24

Taenia solium

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