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Multiple choice (Laventhal) Flashcards

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1
Q

Infection with Enterobious vermicularis is the best diagnosed by which one of the following?

A

Examination of a cellophane tape preparation for eggs and adult

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2
Q

Human infection with Loa loa is the best diagnosed by which of following ?

A

Examination of blood smears

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3
Q

A child who plays in the dirt contaminated with human and pet feces is susceptible to which of the following set of parasites?

A

S. stercoralis, T. canis, A. lumbricoides, N. americanus

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4
Q

All of the following adult parasites live in the intestinal tract, except:
Ascaris lumbricoides
Dracunculus medinensis
Onchocerca vovulus
Trichella spiralis

A

Onchocerca volvulus

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5
Q

The largest nematodes that is found in the subcutaneously in infected host?

A

Dracunculus medinensis

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6
Q

Each of the following microfilaria has a sheath , except

A

Mansonella ozzardi

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7
Q

Diagnostic method for Ascaris lumbricoides

A

Fecal concentration method

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8
Q

Diagnostic method for S. stercoralis

A

Fecal concentration method

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9
Q

Diagnostic method for Trichinella spiralis

A

Tissue biopsy

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10
Q

Diagnostic method for W. bancrofti

A

Blood film examination

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11
Q

The vector of Brugia malayi

A

Anopheles and mansonia

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12
Q

The vector of Loa loa

A

Chrysops fly

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13
Q

The vector for Onchocerca volvulus

A

Simulium fly

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14
Q

The vector for Wuchereria bancrofti

A

Anopheles and culex

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15
Q

Visceral larva migrants is caused by

A

Toxocara canis

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16
Q

The zoonotic disease known as creeping eruption is caused by :

A

Ancylostoma braziliense

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17
Q

Can cause microcytic anemia , Vitamin b12 deficiency

A

Diphyllobothrium latum

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18
Q

Plerocercoid subcutaneously

A

Sparganosis

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19
Q

Neurological symptoms in the brain

A

Cysticercosis

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20
Q

Autoreinfection is common

A

Hymenolepis nana

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21
Q

Proglottid has 7 to 10 lateral urine branches

A

Taenia solium

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22
Q

Human accidentally ingested infected flea

A

Dipylidium caninum

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23
Q

Cysts found in liver, lungs or other organs

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A

Echinococcus granulosus

24
Q

A patient from the Great Lakes ares presents with vague abdominal symptoms and a macrocytic anemia. Which cestoda would be the probable cause?

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A

Diphyllobothrium latum

25
A scolex is recovered in the human feces after patient is treated with medication. The scolex bears four cup shaped suckers. This parasite is:
Taenia saginata
26
The eggs of which two species are infective to humans if ingested, resulting in the larval stages and pathology in the host tissue?
Echinococcus granulosos and Taenia solium Amor's note: Hymenolepis nana and Taenia saginata
27
The larval stage of which two species are infective to humans if the parasitized insect intermediate host is ingested?
Hymenolepis nana and Dipylidium caninum
28
Packets of tapeworm eggs encapsulated in a single membrane were recovered feces. This parasites is:
Dipylidium caninum
29
The causative agent of cysticercosis is :
Taenia solium
30
The examination of human feces is no help of the detection of ?
Echinococcus granulosus
31
Mature eggs of an adult tapeworm accumulate in the :
Gravid proglottid
32
A type of tapeworm larva with a large bladder, producing daughter cysts, brood capsules, and numerous scolices is
Hydatid cyst
33
Eggs from which tapeworm, when passed, are immediately infective to humans?
Hymenolepis nana
34
In which o nematodes can each organism cause a pneumonia-like syndrome in a person exposed to heavy infection with any of the three parasites?
Necator americanus, Ascaris lumbricoides, Strongyloider stercoralis
35
A patient presents with vague abdominal pains and a microcytic hypochromic anemia. A possible causative parasite is:
Ancylostoma duodenale
36
An immunosuppressed patient is susceptible to autoreinfection with which of the ff nematodes?
Strongyloides stercoralis
37
In the Diphyllobothrium latum life cycle, the infective stage for humans is:
Plerocercoid
38
The number of uterine branches in the mature proglottid of Taenia saginata is:
More than 14
39
The tapeworm scolex without cup-shaped suckers is:
Diphyllobotrium latum
40
Define and cite an example of each of the following: a. Hexacanth embryo b. Hermaphroditic c. Armed scolex d. Proglottid e. Hydatid cysts
a. embryo with 6 hooklets b. two sexes in one organism c. presence of hooklets d. chain of segments e. E. granulosus
41
What is the intermediate hosts for each parasite: Taenia solium
Pig and Human
42
What is the intermediate hosts for this parasite: Hymenolepis nana
None
43
What is the intermediate hosts for this parasite: Hymenolepis diminuta
Flea or beetle
44
What is the intermediate hosts for this parasite: Diphyllobothrium latum
Fish and Copepod
45
What is the intermediate hosts for this parasite: Echinococcus granulosus
Human and none
46
Chronologic sequence of the life cycle of an intestinal nematode
Egg --> Miracidium --> Sporocyst --> Redia --> Cercaria --> Metacercaria --> Adult
47
Humans can be infected with the larval stage of all except one of the following parasites. Which of these Digenea cannot develop as a viable larva in the tissues of humans? a. Hydatid tapeworm b. Bird schistosomes c. Manson's blood fluke d. Sheep liver fluke
b. Bird schistosomes
48
Which Platyhelminthes infects humans by skin penetration and has an association with bladder cancer?
Schistosoma haematobium
49
Eggs of all of the ff flukes are undeveloped when passed in feces except: a. Fasciola hepatica b. Paragonimus westermani c. Schistosoma japonicum d. Clonorchis sinensis
A. Fasciola hepatica
50
Fish carrying metacercariae may transmit:
Clonorchis sinensis
51
Paragonimus westermani infection is acquired by:
Eating infected crustacea
52
Schistosoma cercariae enter the human body:
By skin penetration or in contaminated drinking water
53
The Digenea infection for which bloody urine is often a symptom is:
Schistosoma haematobium
54
The fluke most commonly found in the United States is:
Fasciola hepatica
55
The preffered specimen for the diagnosis of paragonimiasis is:
Sputum
56
The three species of human blood flukes have as intermediate host:
An aquatic snail
57
The fluke acquired by eating contaminated vegetation is:
Fasciolopsis buski

PARASITOLOGY (4 decks)

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