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TEST BANK for Medical Parasitology, 7th Edition by Ruth Leventhal; Russell F. Cheadle | Verified Chapter's 1 - 11 | Complete Newest Version$20.49
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TEST BANK for Medical Parasitology, 7th Edition by Ruth Leventhal; Russell F. Cheadle | Verified Chapter's 1 - 11 | Complete Newest Version
TEST BANK for Medical Parasitology, 7th Edition by Ruth Leventhal; Russell F. Cheadle | Verified Chapter's 1 - 11 | Complete Newest Version TEST BANK for Medi...
Medical Parasitology 7th Edition
Leventhal Test Bank
,Chapter 1. Introduction
1. 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:
a. Definitive host phase
b. Diagnostic stage
c. Infective stage
d. Method of infection
2. A parasite that lives inside a host is referred to as a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
GRADESMORE.COM
3. Zoonosis is a term used to describe humans’ relationship with a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
4. An animal that harbors a parasite that can also infect humans is referred to as a(n):
a. Definitive host
b. Intermediate host
c. Reservoir host
d. Transport host
5. The host in which the parasite reaches sexual or reproductive maturity is referred to as a(n):
a. Definitive host
b. Intermediate host
1. 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:
a. Definitive host phase
b. Diagnostic stage
c. Infective stage
d. Method of infection
ANS: C
RATIONALE: This is the stage of the life cycle at which the parasite is capable of entering and
developing within the host. It is a required part of the life cycle of that parasite.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall
2. A parasite that lives inside a host is referred to as a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite GRADESMORE.COM
ANS: C
RATIONALE: Endoparasites live inside the host. Ectoparasites live on the outside of the host.
Facultative parasites can live as well outside the host as inside the host; host infection usually
occurs accidentally. Other accidental parasites may include parasites that usually infect other
animals.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall
3. Zoonosis is a term used to describe humans’ relationship with a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
ANS: A
RATIONALE: Zoonosis is an accidental infection with a parasite that usually parasitizes
animals. Endoparasites live inside the host. Ectoparasites live outside the host. Facultative
,parasites can live as well outside the host as inside the host; host infection usually occurs
accidentally.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall
4. An animal that harbors a parasite that can also infect humans is referred to as a(n):
a. Definitive host
b. Intermediate host
c. Reservoir host
d. Transport host
ANS: C
RATIONALE: Reservoir hosts harbor parasites that are also infective for humans. Infections
occur when humans encounter infected animals or infective forms related to that parasite’s life
cycle.
KEY: Introduction: parasite-host relationships | Cognitive level: recall
5. The host in which the parasite reaG
chReA
sDseExS
uaMl O
orRrE
ep.roCdOuM
ctive maturity is referred to as a(n):
a. Definitive host
b. Intermediate host
c. Reservoir host
d. Transport host
ANS: A
RATIONALE: The definitive host harbors the parasite in its complete form, which promotes
continuance of the parasite’s life cycle. A reservoir host also serves as a definitive host.
KEY: Introduction: parasite-host relationships | Cognitive level: recall
1. A clinical sign that may suggest the presence of a filarial nematode infection is:
a. Diarrhea
b. Eosinophilia
c. Jaundice
d. Microcytic anemia
2. The nematode infection that may become more severe through ingestion of infective eggs,
especially in infected infants, is:
a. Ancylostoma duodenale
b. Enterobius vermicularis
c. Strongyloides stercoralis
d. Trichinella spiralis
3. 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:
a. Diagnostic stage
b. Infective stage
c. Liver-lung migration
d. Method of infection
4. Patients who have heavy infections with Necator americanus may exhibit all of the following
symptoms EXCEPT:
a. Diarrhea
b. Larval dermatitis
c. Macrocytic anemia
d. Microcytic anemia
,5. The nematode egg that appears as a barrel-shaped structure with clear polar plugs at each end
of the egg belongs to:
a. Ascaris lumbricoides
b. Enterobius vermicularis
c. Strongyloides stercoralis
d. Trichuris trichiura
6. 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:
a. Ascaris lumbricoides
b. Enterobius vermicularis
c. Strongyloides stercoralis
d. Trichuris trichiura
7. 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:
a. Enterobius vermicularis
b. Necator americanus
c. Trichuris trichiura
d. Wuchereria bancrofti
8. Which of the following infections is not diagnosed by finding eggs or lava in fecal
specimens?
a. Ascaris lumbricoides
b. Necator spp.
c. Trichinella spiralis
d. Trichuris trichiura
9. Which of the following parasitic diseases is a zoonosis?
a. Ascaris lumbricoides
b. Dracunculus medinensis
c. Strongyloides stercoralis
10. Cutaneous larvamigrans is caused by:
a. Ascaris lumbricoides
b. Necator americanus
c. Strongyloides stercoralis
d. Toxocara canis
11. The nematode parasite that may complete its life cycle without leaving the host is:
a. Ascaris lumbricoides
b. Necator americanus
c. Strongyloides stercoralis
d. Toxocara canis
12. All of the following have life cycles that require larval lung migrations EXCEPT:
a. Ascaris lumbricoides
b. Necator americanus
c. Strongyloides stercoralis
d. Trichuris trichiura
13. The diagnostic form recovered in feces in Strongyloides stercoralis infections is the:
a. Adult worm
b. Egg
c. Filariform larva
d. Rhabditiform larva
14. 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:
a. Ancylostoma duodenale
,b. Dracunculus medinensis
c. Toxocara canis
d. Visceral larva migrans
15. All of the following infections are diagnosed by finding microfilaria in blood EXCEPT:
a. Wuchereria bancrofti
b. Onchocerca volvulus
c. Loa loa
d. Brugia malayi
16. 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. Brugia malayi
b. Loa loa
c. Onchocerca volvulus
d. Wuchereria bancrofti
17. 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:
a. Brugia malayi
b. Loa loa
c. Onchocerca volvulus
d. Wuchereria bancrofti
18. The diagnosis of Enterobius vermicularis infection is accomplished by observing:
a. Eggs in feces
b. Eggs recovered from the perianal region
c. Larva in feces
d. Trophozoites in feces
, 19. The rhabditiform larva of Strongyloides stercoralis has a:
a. Long buccal cavity
b. Sheath
c. Large genital primordium
d. Notched tail
20. Closed fecal sanitation systems had directly led to the reduction of all the following
nematode infections EXCEPT:
a. Ascariasis
b. Hookworm disease
c. Strongyloidiasis
d. Trichinosis
21. 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:
a. Ascaris lumbricoides
b. Enterobius vermicularis
c. Hookworm
d. Trichuris trichiura
22. The nematode infection that is acquired by ingesting a Cyclops (water flea) is:
a. Dracunculus medinensis
b. Enterobius vermicularis
c. Necator americanus
d. Trichinella spiralis
23. Which of the following organisms or infections could be transmitted in the laboratory?
a. Ascaris lumbricoides—Ascariasis
b. Enterobius vermicularis—pinworm infection
c. Strongyloides stercoralis—Strongyloidiasis
d. Trichuris trichiura—whipworm infection
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