Question 1

A microfilaria recovered in a blood sample from a patient from Vietnam had two nuclei at the tip of the tail. The worm was enclosed in a sheath. This parasite is:

Accepted Answer

A)   Brugia malayi
B)   Loa loa
C)   Onchocerca volvulus
D)   Wuchereria bancrofti A

Question 2

A 7-year-old boy's CBC revealed a microcytic anemia with eosinophilia during an office visit for symptoms of diarrhea. The most likely parasite involved in the infection is:

Accepted Answer

A)   Enterobius vermicularis
B)   Necator americanus
C)   Trichuris trichiura
D)   Wuchereria bancrofti B

Question 3

Which of the following parasitic diseases can cause blindness?

Accepted Answer

A)   Brugia malayi
B)   Loa loa
C)   Onchocerca volvulus
D)   Wuchereria bancrofti C

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 egg

Question 5

The nematode parasite that may complete its life cycle without leaving the host is:

Accepted Answer

A)   Ascaris lumbricoides
B)   Necator americanus
C)   Strongyloides stercoralis
D)   Toxocara canis

Question 6

The rhabditiform larva of Strongyloides stercoralis has a:

Accepted Answer

A)   Long buccal cavity
B)   Sheath
C)   Large genital primordium
D)   Notched tail

Question 7

Name the parasite shown in the following image:

Accepted Answer

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

Question 8

The nematode infection that may become more severe through ingestion of infective eggs, especially in infected infants, is:

Accepted Answer

A)   Ancylostoma duodenale
B)   Enterobius vermicularis
C)   Strongyloides stercoralis
D)   Trichinella spiralis

Question 9

Which of the following organisms or infections could be transmitted in the laboratory?

Accepted Answer

A)   Ascaris lumbricoides-Ascariasis
B)   Enterobius vermicularis-pinworm infection
C)   Strongyloides stercoralis-Strongyloidiasis
D)   Trichuris trichiura-whipworm infection

Question 10

A parasite that lives inside a host is referred to as a(n):

Accepted Answer

A)   Accidental parasite
B)   Ectoparasite
C)   Endoparasite
D)   Facultative parasite

Question 11

All of the following have life cycles that require larval lung migrations EXCEPT:

Accepted Answer

A)   Ascaris lumbricoides
B)   Necator americanus
C)   Strongyloides stercoralis
D)   Trichuris trichiura

Question 12

All of the following infections are diagnosed by finding microfilaria in blood EXCEPT:

Accepted Answer

A)   Wuchereria bancrofti
B)   Onchocerca volvulus
C)   Loa loa
D)   Brugia malayi

Question 13

A soldier returning from Iraq noticed a blister above his ankle that subsequently opened while he was swimming in his family pool. On further examination, he noticed a worm in the open blister. The possible parasite in this lesion is:

Accepted Answer

A)   Ancylostoma duodenale
B)   Dracunculus medinensis
C)   Toxocara canis
D)   Visceral larva migrans

Question 14

Cutaneous larvamigrans is caused by:

Accepted Answer

A)   Ascaris lumbricoides
B)   Necator americanus
C)   Strongyloides stercoralis
D)   Toxocara canis

Question 15

The nematode infection that is acquired by ingesting a Cyclops (water flea) is:

Accepted Answer

A)   Dracunculus medinensis
B)   Enterobius vermicularis
C)   Necator americanus
D)   Trichinella spiralis

Question 16

In a general nematode parasite's life cycle, the host may ingest a fertile egg. This stage of the life cycle is referred to as the:

Accepted Answer

A)   Definitive host phase
B)   Diagnostic stage
C)   Infective stage
D)   Method of infection

Question 17

Name the parasite shown in the following image:

Accepted Answer

A)   Wuchereria bancrofti-microfilaria
B)   Filariform larva
C)   Pinworm-female
D)   Rhabditiform larva

Question 18

Which of the following parasitic diseases is a zoonosis?

Accepted Answer

A)   Ascaris lumbricoides
B)   Dracunculus medinensis
C)   Strongyloides stercoralis
D)   Trichinella spiralis

Question 19

Patients who have heavy infections with Necator americanus may exhibit all of the following symptoms EXCEPT:

Accepted Answer

A)   Diarrhea
B)   Larval dermatitis
C)   Macrocytic anemia
D)   Microcytic anemia

Question 20

Closed fecal sanitation systems had directly led to the reduction of all of the following nematode infections EXCEPT:

Accepted Answer

A)   Ascariasis
B)   Hookworm disease
C)   Strongyloidiasis
D)   Trichinosis

Exam 1: Introduction and Nematoda

A microfilaria recovered in a blood sample from a patient from Vietnam had two nuclei at the tip of the tail. The worm was enclosed in a sheath. This parasite is:

A 7-year-old boy's CBC revealed a microcytic anemia with eosinophilia during an office visit for symptoms of diarrhea. The most likely parasite involved in the infection is:

Which of the following parasitic diseases can cause blindness?

Name the parasite shown in the following image:

The nematode parasite that may complete its life cycle without leaving the host is:

The rhabditiform larva of Strongyloides stercoralis has a:

Name the parasite shown in the following image:

The nematode infection that may become more severe through ingestion of infective eggs, especially in infected infants, is:

Which of the following organisms or infections could be transmitted in the laboratory?

A parasite that lives inside a host is referred to as a(n) :

All of the following have life cycles that require larval lung migrations EXCEPT:

All of the following infections are diagnosed by finding microfilaria in blood EXCEPT:

A soldier returning from Iraq noticed a blister above his ankle that subsequently opened while he was swimming in his family pool. On further examination, he noticed a worm in the open blister. The possible parasite in this lesion is:

Cutaneous larvamigrans is caused by:

The nematode infection that is acquired by ingesting a Cyclops (water flea) is:

In a general nematode parasite's life cycle, the host may ingest a fertile egg. This stage of the life cycle is referred to as the:

Name the parasite shown in the following image:

Which of the following parasitic diseases is a zoonosis?

Patients who have heavy infections with Necator americanus may exhibit all of the following symptoms EXCEPT:

Closed fecal sanitation systems had directly led to the reduction of all of the following nematode infections EXCEPT: