Question 1

An immigrant from central Africa is exhibiting transient subcutaneous swelling in the arm. A blood smear revealed a sheathed microfilaria with a single row of nuclei present in the posterior of the parasite. The most likely identification is:

Accepted Answer

A)   Brugia malayi
B)   Loa loa
C)   Onchocerca volvulus
D)   Wuchereria bancroftiE) A) and B)
F) A) and D)

Question 2

A clinical sign that may suggest the presence of a filarial nematode infection is:

Accepted Answer

A)   Diarrhea
B)   Eosinophilia
C)   Jaundice
D)   Microcytic anemiaE) A) and D)
F) All of the above

Question 3

Name the parasite shown in the following image:

Accepted Answer

A)   Ascaris lumbricoides egg
B)   Enterobius vermicularis egg
C)   Hookworm egg
D)   Trichuris trichiura eggE) B) and D)
F) None of the above

Question 4

Name the parasite shown in the following image:

Accepted Answer

A)   Ascaris lumbricoides egg
B)   Enterobius vermicularis egg
C)   Hookworm egg
D)   Trichuris trichiura eggE) A) and B)
F) A) and C)

Question 5

Which of the following infections is not diagnosed by finding eggs or lava in fecal specimens?

Accepted Answer

A)   Ascaris lumbricoides
B)   Necator spp.
C)   Trichinella spiralis
D)   Trichuris trichiuraE) All of the above
F) A) and C)

Question 6

Elephantiasis is a clinical symptom associated with:

Accepted Answer

A)   Brugia malayi
B)   Loa loa
C)   Onchocerca volvulus
D)   Strongyloides stercoralisE) B) and D)
F) A) and C)

Question 7

A slender round worm measuring 25 cm was recovered from a toilet following a child's trip to the bathroom. The specimen most likely is:

Accepted Answer

A)   Ascaris lumbricoides
B)   Enterobius vermicularis
C)   Strongyloides stercoralis
D)   Trichuris trichiuraE) B) and C)
F) A) and C)

Question 8

An animal that harbors a parasite that can also infect humans is referred to as a(n) :

Accepted Answer

A)   Definitive host
B)   Intermediate host
C)   Reservoir host
D)   Transport hostE) A) and B)
F) All of the above

Question 9

In the Ascaris lumbricoides life cycle, after eggs are ingested, the next stage in the life cycle that must occur before a mature adult can live in the host's intestine is called the:

Accepted Answer

A)   Diagnostic stage
B)   Infective stage
C)   Liver-lung migration
D)   Method of infectionE) B) and D)
F) A) and B)

Question 10

The diagnostic form recovered in feces in Strongyloides stercoralis infections is the:

Accepted Answer

A)   Adult worm
B)   Egg
C)   Filariform larva
D)   Rhabditiform larvaE) B) and D)
F) None of the above

Question 11

The diagnostic form of this parasite appears as an oval thin-shelled egg with a clear area around the eight-celled immature embryo. This parasite is:

Accepted Answer

A)   Ascaris lumbricoides
B)   Enterobius vermicularis
C)   Hookworm
D)   Trichuris trichiuraE) A) and B)
F) B) and C)

Question 12

The diagnosis of Enterobius vermicularis infection is accomplished by observing:

Accepted Answer

A)   Eggs in feces
B)   Eggs recovered from the perianal region
C)   Larva in feces
D)   Trophozoites in fecesE) A) and C)
F) C) and D)

Question 13

The nematode egg that appears as a barrel-shaped structure with clear polar plugs at each end of the egg belongs to:

Accepted Answer

A)   Ascaris lumbricoides
B)   Enterobius vermicularis
C)   Strongyloides stercoralis
D)   Trichuris trichiuraE) All of the above
F) C) and D)

Question 14

Zoonosis is a term used to describe humans' relationship with a(n) :

Accepted Answer

A)   Accidental parasite
B)   Ectoparasite
C)   Endoparasite
D)   Facultative parasiteE) A) and B)
F) A) and C)

Exam 1: Introduction and Nematoda

An animal that harbors a parasite that can also infect humans is referred to as a(n) :

Correct Answer
verified

An immigrant from central Africa is exhibiting transient subcutaneous swelling in the arm. A blood smear revealed a sheathed microfilaria with a single row of nuclei present in the posterior of the parasite. The most likely identification is:

Correct Answer
verified

A slender round worm measuring 25 cm was recovered from a toilet following a child's trip to the bathroom. The specimen most likely is:

Correct Answer
verified

Zoonosis is a term used to describe humans' relationship with a(n) :

Correct Answer
verified

In the Ascaris lumbricoides life cycle, after eggs are ingested, the next stage in the life cycle that must occur before a mature adult can live in the host's intestine is called the:

Correct Answer
verified

Elephantiasis is a clinical symptom associated with:

Correct Answer
verified

A clinical sign that may suggest the presence of a filarial nematode infection is:

Correct Answer
verified

Name the parasite shown in the following image:

Correct Answer
verified

Name the parasite shown in the following image:

Correct Answer
verified

Which of the following infections is not diagnosed by finding eggs or lava in fecal specimens?

Correct Answer
verified

The diagnostic form of this parasite appears as an oval thin-shelled egg with a clear area around the eight-celled immature embryo. This parasite is:

Correct Answer
verified

The diagnostic form recovered in feces in Strongyloides stercoralis infections is the:

Correct Answer
verified

The diagnosis of Enterobius vermicularis infection is accomplished by observing:

Correct Answer
verified

The nematode egg that appears as a barrel-shaped structure with clear polar plugs at each end of the egg belongs to:

Correct Answer
verified

Exam 1: Introduction and Nematoda

An animal that harbors a parasite that can also infect humans is referred to as a(n) :

Correct AnswerverifiedShow Answer

An immigrant from central Africa is exhibiting transient subcutaneous swelling in the arm. A blood smear revealed a sheathed microfilaria with a single row of nuclei present in the posterior of the parasite. The most likely identification is:

Correct AnswerverifiedShow Answer

A slender round worm measuring 25 cm was recovered from a toilet following a child's trip to the bathroom. The specimen most likely is:

Correct AnswerverifiedShow Answer

Zoonosis is a term used to describe humans' relationship with a(n) :

Correct AnswerverifiedShow Answer

In the Ascaris lumbricoides life cycle, after eggs are ingested, the next stage in the life cycle that must occur before a mature adult can live in the host's intestine is called the:

Correct AnswerverifiedShow Answer

Elephantiasis is a clinical symptom associated with:

Correct AnswerverifiedShow Answer

A clinical sign that may suggest the presence of a filarial nematode infection is:

Correct AnswerverifiedShow Answer

Name the parasite shown in the following image:

Correct AnswerverifiedShow Answer

Name the parasite shown in the following image:

Correct AnswerverifiedShow Answer

Which of the following infections is not diagnosed by finding eggs or lava in fecal specimens?

Correct AnswerverifiedShow Answer

The diagnostic form of this parasite appears as an oval thin-shelled egg with a clear area around the eight-celled immature embryo. This parasite is:

Correct AnswerverifiedShow Answer

The diagnostic form recovered in feces in Strongyloides stercoralis infections is the:

Correct AnswerverifiedShow Answer

The diagnosis of Enterobius vermicularis infection is accomplished by observing:

Correct AnswerverifiedShow Answer

The nematode egg that appears as a barrel-shaped structure with clear polar plugs at each end of the egg belongs to:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified