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Parasitology MTAP > THE HEMOFLAGELLATES Quick Questions > Flashcards

THE HEMOFLAGELLATES Quick Questions Flashcards

1
Q

This is the only hemoflagellate morphologic form that does not have an external flagellum.

A. Trypomastigote
B. Amastigote
C. Promastigote
D. Epimastigote

A

B. Amastigote

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2
Q

Hemoflagellates are typically found in stool samples.

A. True
B. False

A

B. False

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3
Q

The symptoms of hemoflagellate infections range from minor, such as irritation at the infection site, to serious (comatose state and death).

A. True
B. False

A

A. True

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4
Q

Of the following laboratory diagnostic methods, which is the most commonly used for the recovery of members of the L. braziliensis complex?

A. Schizodeme analysis
B. Culture of infected material
C. Identifying amastigotes in infected material
D. Zymodeme analysis

A

C. Identifying amastigotes in infected material

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5
Q

The organism causing chiclero ulcer is most likely found in:

A. Texas
B. South American rainforest region
C. Nova Scotia
D. Egypt

A

B. South American rainforest region

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6
Q

Which of the following is not an acceptable treatment for mucocutaneous leishmaniasis caused by L. braziliensis?

A. Amoxicillin
B. Pentosam
C. Ambisome
D. Fungizone

A

A. Amoxicillin

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7
Q

A common name for disease caused by L. donovani is:

A. Visceral leishmaniasis
B. Kala-azar
C. Dum dum fever
D. All of the above

A

D. All of the above

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8
Q

The vector responsible for the transmission of L. donovani is:

A. Lutzomyia sandfly
B. Phlebotomus sandfly
C. Psychodopygus sandfly
D. None of the above

A

A. Lutzomyia sandfly
B. Phlebotomus sandfly

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9
Q

Which of the following items does not describe kala- azar?

A. Commonly found in Iraq
B. Transmitted by the Phlebotomus and Lutzomyia sandfly species
C. Is not transmitted by blood transfusion
D. Can be serologically determined by ELISA, IFA, and DAT methods

A

C. Is not transmitted by blood transfusion

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10
Q

The specimen of choice for the recovery of L. mexicana complex members is:

A. CSF
B. Stool
C. Lesion biopsy material
D. Duodenal contents

A

C. Lesion biopsy material

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11
Q

Which of the following is not a reservoir host for L. mexicana complex?

A. Squirrels
B. Chipmunks
C. Rats
D. Snakes

A

D. Snakes

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12
Q

Which of the following best describe disease caused by the L. mexicana complex?

A. Can disseminate into a diffuse cutaneous form
B. Appears around the ears in approximately 40% of patients
C. Both A and B are correct.
D. None of the above

A

C. Both A and B are correct.

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13
Q

All the following are geographic regions in which the members of the L. tropica complex can be found except:

A. Brazil
B. Uzbekistan
C. Iran
D. Syria

A

A. Brazil

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14
Q

The specimen of choice for the recovery of L. tropica complex members is:

A. CSF
B. Fluid underneath the ulcer bed
C. Blood
D. Tissue biopsy

A

B. Fluid underneath the ulcer bed

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15
Q

The most common morphologic form seen in samples positive for L. tropica complex members is:

A. Trypomastigote
B. Promastigote
C. Epimastigote
D. Amastigote

A

D. Amastigote

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16
Q

Of the following, which tests are considered diagnos- tic for trypanosomiasis?

A. Giemsa-stained blood slides revealing the trypomastigote
B. Giemsa-stained blood slides revealing the amastigote
C. Increased serum and CSF IgM levels
D. Both A and C are correct.
E. All of the above

A

D. Both A and C are correct.

17
Q

There are no known animal reservoir hosts for T.b. gambiense.

A. True
B. False

A

A. True

18
Q

The enlargement of cervical lymph nodes in reference to trypanosomal disease caused by T.b. gambiense is referred to as:

A. Chancre
B. Kerandel’s sign
C. Winterbottom’s sign
D. Somnolence

A

C. Winterbottom’s sign

19
Q

The diagnostic stage of T.b. rhodesiense is the:

A. Trypomastigote
B. Epimastigote
C. Promastigote
D. Amastigote

A

A. Trypomastigote

20
Q

Which of the following trypanosomal parasites that causes sleeping sicknesses is the more aggressive form?

A. Trypanosoma brucei gambiense
B. Trypanosoma brucei rhodesiense
C. Trypanosoma cruzi
D. Trypanosoma rangeli

A

B. Trypanosoma brucei rhodesiense

21
Q

What complicates the prevention and control efforts for T.b. rhodesiense?

A. Vast species of reservoir hosts
B. Breeding occurs wherever brush is abundant
C. Both A and B
D. None of the above

A

D. None of the above

22
Q

The specimen of choice for the detection of T. cruzi is:

A. Stool
B. Blood
C. Tissue
D. Ulcer

A

B. Blood

23
Q

Which of the following is the vector first identified as responsible for transmitting T. cruzi?

A. Phlebotomus spp.
B. Lutzomyia spp.
C. Panstrongylus megistus
D. Glossina spp.

A

C. Panstrongylus megistus

24
Q

Which of the following is not a characteristic finding in Chagas’ disease?

A. Romaña’s sign
B. Megacolon
C. Cardiomegaly
D. Somnolence

A

D. Somnolence

25
Q

The diagnostic testing methods for T. rangeli are the same as those for identifying and confirming and infection with T. cruzi.

A. True
B. False

A

A. True

26
Q

The phrase that best describes the infection associ- ated with T. rangeli is that it:

A. Mimics that of individuals infected with T. cruzi
B. Causes South American sleeping sickness
C. Is considered a benign infection
D. Produces Winterbottom’s sign

A

C. Is considered a benign infection

27
Q

Which of the following is not a prevention and control measure for T. rangeli? (Objective 5-7)

A. Use of DDT to control reduviid bug populations
B. Better housing construction
C. Removing overgrown vegetation
D. Educational programs in endemic areas

A

C. Removing overgrown vegetation

28
Q

The diagnostic stage for Trypanosoma spp. is the:

A. Amastigote
B. Epimastigote
C. Trypomastigote
D. Promastigote

A

C. Trypomastigote

29
Q

American trypanosomiasis is commonly referred to as:

A. Cruzon’s syndrome
B. Chiclero ulcer
C. Bay sore
D. Chagas’ disease

A

D. Chagas’ disease

30
Q

Which of the following organisms is the causative agent of Baghdad boils?

A. Leishmania donovani
B. Trypanosoma brucei gambiense
C. Trypanosoma brucei rhodesiense
D. Trypanosoma cruzi
E. Leishmania tropica

A

E. Leishmania tropica

31
Q

Which of the following organisms is the causative agent of West African sleeping sickness?

A. Leishmania donovani
B. Trypanosoma brucei gambiense
C. Trypanosoma brucei rhodesiense
D. Trypanosoma cruzi
E. Leishmania tropica

A

B. Trypanosoma brucei gambiense

32
Q

Which of the following best describes the geographic region in which Trypanosoma rangeli is found?

A. Near East
B. South and Central America
C. Middle East
D. Southeastern United States

A

B. South and Central America

33
Q

The vector responsible for the transmission of chiclero ulcer is:

A. Lutzomyia and Psychodopygus sandflies
B. Phlebotomus and Psychodopygus sandflies
C. Glossina spp.
D. Lutzomyia and Phlebotomus sandflies

A

A. Lutzomyia and Psychodopygus sandflies

34
Q

Choose the best description of zymodeme analysis:
A. Nuclear DNA hybridization
B. Restriction analysis of the kinetoplast DNA
C. Analysis of the isoenzyme patterns of an organism
D. None of the above

A

C. Analysis of the isoenzyme patterns of an organism

35
Q

Winterbottom’s sign is associated with which of the following hemoflagellates?

A. Leishmania donovani
B. Trypanosoma brucei gambiense
C. Trypanosoma brucei rhodesiense
D. Trypanosoma cruzi
E. Leishmania tropica

A

B. Trypanosoma brucei gambiense

36
Q

The reduviid bug is the vector for trans- mitting which of the following parasites?

A. Leishmania donovani
B. Trypanosoma brucei gambiense
C. Trypanosoma brucei rhodesiense
D. Trypanosoma cruzi
E. Leishmania tropica

A

D. Trypanosoma cruzi

37
Q

Which of the following organisms causes the less aggressive form of sleeping sick- ness?

A. Trypanosoma brucei gambiense
B. Trypanosoma cruzi
C. Trypanosoma brucei rhodesiense
D. Trypanosoma rangeli

A

A. Trypanosoma brucei gambiense

Parasitology MTAP (6 decks)

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