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PARASITOLOGY PRELIMS > SUMMATIVE TEST > Flashcards

SUMMATIVE TEST Flashcards

1
Q

small genital primodium

A

Hookworm L1 larva

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2
Q

pointed tail

A

Hookworm L3 larva

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3
Q

large genital primodium

A

Threadworm L1 larva

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4
Q

notched tail

A

Threadworm L3 larva

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5
Q

MOT is ingestion of foods contaminated with embryonated egg

A

pinworm
whipworm
giant intestinal roundworm

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6
Q

The layer of ascaris egg missing if it is decorticated and fertilized.

A

albuminous layer

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6
Q

Free living form is observed in this species of nematodes.

A

S. stercoralis

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7
Q

Which parasite is not included in this series in terms of development?
A. T. trichiura
B. Ascaris lumbricoides
C. S. stercoralis
D. Hookworms

A

C. S. stercoralis

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8
Q

Which of the following is true for nematodes?
A. monoecious
B. segmented
C. hermaphrodite
D. has functional nervous system

A

D. has functional nervous system

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9
Q

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

A

D. eggs are segmented when passed

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10
Q

The rhabditiform larva of this parasite has a short buccal cavity and a large genital primordium

A

B. Threadworm

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11
Q

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

A

C. all male worm population

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12
Q

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

A

D. free-living adult

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13
Q

The helminth that may cause severe anemia in heavy worm infection.
A. N. americanus
B. S. stercoralis
C. T. trichiura
D. A. lumbricoides

A

A. N. americanus

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14
Q

Method of diagnosing society worm infection.

A

A. Cellulose tape swab

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15
Q

Morulla ball/egg cell stages is the diagnostic stage
A. Threadworm
B. Rat lung worm
C. Hookworm
D. Pudoc worm

A

C. Hookworm

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16
Q

Harada-Mori technique will recover L3 stage and this will differentiate N. americanus from A. duodenale.
A. True
B. False

A

B. False

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17
Q

Eggs of Trichuris trichiura are embryonated when oviposited.
A. True
B. False

A

B. False

18
Q

Larva currens is caused by:
A. Ascariasis
B. Cutaneous larva migrans
C. Strongyloidiasis
D. Toxocara canis

A

C. Strongyloidiasis

19
Q

All of the following nematodes are oviparous EXCEPT:
A. Roundworm
B. Strongyloides
C. Hookworm
D. Enterobius

A

B. Strongyloides

20
Q

Common name of Trichuris trichiura is:
A. Pinworm
B. Roundworm
C. Hookworm
D. Whipworm

A

D. Whipworm

21
Q

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

A

C. Ingestion of embryonated eggs present in contaminated food and water

22
Q

Which of the following is the causative agent of “creeping eruption”?

A

Ancylostoma braziliense

23
Q

Tripartite dorsal rays are seen in ____. Answer all that apply.
A. Necator americanus
B. Ancylostoma braziliense
C. Ancylostoma duodenale
D. Ancylostoma caninum

A

A. Necator americanus
B. Ancylostoma braziliense
C. Ancylostoma duodenale
D. Ancylostoma caninum

24
Q

Bursa is supported by short stubby rays.

A

Ancylostoma braziliense

25
Q

The head is curved opposite to the curvature of the body.

A

Necator americanus

26
Q

Transverse striations on the sheath in the tail region of L3 larva.

A

Ancylostoma duodenale

27
Q

The buccal spears of the filariform larva are conspicuous.

A

Necator americanus

28
Q

The egg has bluntly rounded ends and a single thin transparent hyaline shell.

A

All hookworms

29
Q

fertilization membrane

A

vitelline membrane

30
Q

glycogen membrane

A

chorionic layer

31
Q

outer layer

A

albuminous

32
Q

refractile lecithin granules are found in

A

albuminous

33
Q

STHs include

A

whipworm
Giant intestinal roundworm

34
Q

This is capable of larval migration.

A

Giant intestinal roundworm

35
Q

Rectal prolapse is associated with

A

whipworm

36
Q

Female worm has pointed posterior end.

A

pinworm
whipworm
Giant intestinal roundworm

37
Q

“Worm ball” or entangled adult worm is associated with _

A

Giant intestinal roundworm

38
Q

Autoinfection is possible.

A

pinworm
threadworm

39
Q

Diagnostic stage is ova.

A

pinworm
whipworm
Giant intestinal roundworm
hookworm

40
Q

long buccal cavity

A

Hookworm L1 larva

41
Q

short esophagus

A

Hookworm L3 larva

42
Q

short buccal cavity

A

Threadworm L1 larva

43
Q

long esophagus

A

Threadworm L3 larva

PARASITOLOGY PRELIMS (4 decks)

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