SUMMATIVE TEST Flashcards
small genital primodium
Hookworm L1 larva
pointed tail
Hookworm L3 larva
large genital primodium
Threadworm L1 larva
notched tail
Threadworm L3 larva
MOT is ingestion of foods contaminated with embryonated egg
pinworm
whipworm
giant intestinal roundworm
The layer of ascaris egg missing if it is decorticated and fertilized.
albuminous layer
Free living form is observed in this species of nematodes.
S. stercoralis
Which parasite is not included in this series in terms of development?
A. T. trichiura
B. Ascaris lumbricoides
C. S. stercoralis
D. Hookworms
C. S. stercoralis
Which of the following is true for nematodes?
A. monoecious
B. segmented
C. hermaphrodite
D. has functional nervous system
D. has functional nervous system
Which of the following is true for hookworms?
A. dental patterns can differentiate male and female species
B. found in small intestine unattached
C. female has copulatory bursa
D. eggs are segmented when passed
D. eggs are segmented when passed
The rhabditiform larva of this parasite has a short buccal cavity and a large genital primordium
B. Threadworm
A negative DFS for Ascaris egg may mean any of the following
A. all female worm population
B. immature male worm
C. all male worm population
D. female worms not fertilized
C. all male worm population
Strongyloides life cycle differs from that of hookworms because of the following:
A. mode of transmission
B. L3 is the infective stage
C. heart and lung migration
D. free-living adult
D. free-living adult
The helminth that may cause severe anemia in heavy worm infection.
A. N. americanus
B. S. stercoralis
C. T. trichiura
D. A. lumbricoides
A. N. americanus
Method of diagnosing society worm infection.
A. Cellulose tape swab
Morulla ball/egg cell stages is the diagnostic stage
A. Threadworm
B. Rat lung worm
C. Hookworm
D. Pudoc worm
C. Hookworm
Harada-Mori technique will recover L3 stage and this will differentiate N. americanus from A. duodenale.
A. True
B. False
B. False
Eggs of Trichuris trichiura are embryonated when oviposited.
A. True
B. False
B. False
Larva currens is caused by:
A. Ascariasis
B. Cutaneous larva migrans
C. Strongyloidiasis
D. Toxocara canis
C. Strongyloidiasis
All of the following nematodes are oviparous EXCEPT:
A. Roundworm
B. Strongyloides
C. Hookworm
D. Enterobius
B. Strongyloides
Common name of Trichuris trichiura is:
A. Pinworm
B. Roundworm
C. Hookworm
D. Whipworm
D. Whipworm
Ascaris infects humans by:
A. Penetration of skin by infective larvae
B. Ingestion of unembryonated eggs present in contaminated food and water
C. Ingestion of embryonated eggs present in contaminated food and water
D. Autoinfection
C. Ingestion of embryonated eggs present in contaminated food and water
Which of the following is the causative agent of “creeping eruption”?
Ancylostoma braziliense
Tripartite dorsal rays are seen in ____. Answer all that apply.
A. Necator americanus
B. Ancylostoma braziliense
C. Ancylostoma duodenale
D. Ancylostoma caninum
A. Necator americanus
B. Ancylostoma braziliense
C. Ancylostoma duodenale
D. Ancylostoma caninum
Bursa is supported by short stubby rays.
Ancylostoma braziliense
The head is curved opposite to the curvature of the body.
Necator americanus
Transverse striations on the sheath in the tail region of L3 larva.
Ancylostoma duodenale
The buccal spears of the filariform larva are conspicuous.
Necator americanus
The egg has bluntly rounded ends and a single thin transparent hyaline shell.
All hookworms
fertilization membrane
vitelline membrane
glycogen membrane
chorionic layer
outer layer
albuminous
refractile lecithin granules are found in
albuminous
STHs include
whipworm
Giant intestinal roundworm
This is capable of larval migration.
Giant intestinal roundworm
Rectal prolapse is associated with
whipworm
Female worm has pointed posterior end.
pinworm
whipworm
Giant intestinal roundworm
“Worm ball” or entangled adult worm is associated with _
Giant intestinal roundworm
Autoinfection is possible.
pinworm
threadworm
Diagnostic stage is ova.
pinworm
whipworm
Giant intestinal roundworm
hookworm
long buccal cavity
Hookworm L1 larva
short esophagus
Hookworm L3 larva
short buccal cavity
Threadworm L1 larva
long esophagus
Threadworm L3 larva