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Clinical Parasitology > Trematodes > Flashcards

Trematodes Flashcards

1
Q

Three characteristics of adult trematodes

A

Non-segmented
Flattened
Leaf-like

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2
Q

Intestinal Species

A

Fasciolopsis buski
Heterophyes hetrophyes
Metagonimus yokogawai

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3
Q

Liver species

A

Fasciola hepatica

Clonorchis sinensis

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4
Q

Lung Species

A

Paragonimus westermani

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5
Q

Blood Species

A

Schistosoma mansoni
Schistosoma japonicum
Schistosoma haematobium

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6
Q

Fasciolopsis buski

A

Large Intestinal Fluke

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7
Q

Heterophyes heterophyes

A

Heterophyid Fluke

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8
Q

Metagonimus yokogawai

A

Yokogawai’s Fluke

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9
Q

Fasciola hepatica

A

Sheep Liver Fluke

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10
Q

Clonorchis sinensis

A

Chinese Liver Fluke

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11
Q

Paragonimus westermani

A

Oriental Lung Fluke

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12
Q

Schistosoma mansoni

A

Manson’s Blood Fluke

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13
Q

Schistosoma japonicum

A

Blood Fluke

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14
Q

Schistosoma haematobium

A

Bladder Fluke

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15
Q

Another name for trematodes

A

Dignea

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16
Q

Parasites that reproduce via separate sexes

A

Dioecious

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17
Q

The general term for human infection of flukes

A

Distosomiasis

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18
Q

A lid like structure present on SOME fluke eggs

A

Operculum

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19
Q

Presence and location of spines distinguish _____________ species

A

Schistosoma

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20
Q

All adults except Schistosomes are (3):

Clue: LHT

A

Leaf-like
Hermaphroditic
Typically food-borne

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21
Q

Dioecious fluke species

A

Schistosomes

22
Q

Schistosomes enter humans through

A

Direct penetration

23
Q

All trematode life cycles require this as an intermediate host

A

Snails

24
Q

Two categories of Trematodes:

A

Organ-dwelling

Blood-dwelling

25
Q

In organ dwelling flukes, infection occurs when?

A

After ingestion of contaminated:

Water plants
Crab
Crayfish
Fish

26
Q

In organ-dwelling flukes, adults are found in:

Clue: IBL

A

Intestines
Bile duct
Lungs

27
Q

In organ-dwelling species, eggs may be passed in:

A

Stool

Sputum

28
Q

All flukes but Schistosomes are ___________ dwelling.

A

Organ

29
Q

Contents of egg

A

Miracidium

30
Q

Larval stage

A

Sporocyst containing rediae

31
Q

Final stage larvae

A

Cercariae

32
Q

The miracidium penetrate specific ___________ species

A

Snail

33
Q

Sporocyst containing _____________ forms

A

Rediae

34
Q

_______________ emerge from snail and enter water plant, fish, crab, or crayfish.

A

Cercariae

35
Q

Blood-dwelling flukes

A

Schistosomes

36
Q

Schistosomes initiate infection through

A

Penetration of cercariae larva into the skin while swimming in contaminated water

37
Q

After initiating infection, schistosomes emerge into __________ form.

A

Schistosomule

38
Q

Schistosomes take up residence in blood vessels around:

Clue: LIU

A

Liver
Intestinal tract
Urinary bladder

39
Q

In blood dwelling flukes, eggs spill into:

A

Stool/

Urine

40
Q

Specimen of choice for trematodes if species-dependent:

Clue: FR. SUD

A 
Feces
Rectal biopsy
Sputum
Urine
Duodenal drainage
41
Q

__________ tests are also available in diagnosing trematode/trematode infection.

A

Serologic

42
Q

Symptoms vary by:

A

Infection

Affected area

43
Q

General symptoms of distosomiasis

Clue: DJ TAE

A 
Diarrhea
Jaundice
Tissue damage
Allergic and toxic reactions
Eosinophilia
44
Q

Phylum of trematodes

A

Platyhelminthes

45
Q

Shape, egg content, and other features of of F. buski and F. hepatica egg

A

Somewhat oblong
Undeveloped miracidium
Presence of a distinct operculum

46
Q

Larger and has no shoulder (adult).

a. Fasciolopsis buski
b. Fasciola hepatica

A

a. Fasciolopsis buski

47
Q

Smaller and with shoulder (adult).

a. Fasciolopsis buski
b. Fasciola hepatica

A

b. Fasciola hepatica

48
Q

Specimen of choice for F. species

A

Stool

49
Q

Eggs are distinguishable for F. species.

True or False?

A

False.

They are indistinguishable

50
Q

Methods to recover adult Fasciola.

Clue: GEE

A

Gel diffusion
Enterotest
ELISA

51
Q

Speciation of F. species can be done via __________

A

Recovery of adult Fasciolopsis worm

Clinical Parasitology (1 decks)

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