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Parasitology > PARASITOLOGY > Flashcards

PARASITOLOGY Flashcards

1
Q

T/F: presence of parasites is accompanied with eosinophilia

A

FALSE

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2
Q

T/F: presence of worm parasites is accompanied with eosinophilia

A

TRUE

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3
Q

T/F: asexual multiplication of parasite occurs in the IH

A

TRUE

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4
Q

3 protozoa associated with PROTRACTED DIARRHEA

A

Giardia lamblia, Cryptosporidium parvum, Entamoeba histolytica

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5
Q

T/F: trophozoite is the active, vegetative stage of protozoa

A

TRUE

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6
Q

flukes and tapeworms belongs to which phylum?

A

platyhelminthes

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7
Q

parasite that causes swimmer’s itch

A

penetrating schistosome larva

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8
Q

T/F: hypersensitivity during parasitic infection is assoc. with increased IGE

A

TRUE

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9
Q

Stain used to examine the nucleus of amoeba

A

iron hematoxylin

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10
Q

if fecal specimens cannot be examined immediately, it should be _______

A

fixed by formalin or kept at body temp

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11
Q

T/F: E. histolytica can grow in cultures

A

TRUE

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12
Q

T/F: stool exam is notsuitable for diagnosis of T. spiralis

A

TRUE

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13
Q

T/F: a fresh stool specimen can show an active larva of S. stercoralis

A

TRUE

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14
Q

T/F: actively moving larva of S. stercoralis and hookworm can still be seen in old stool samples

A

TRUE

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15
Q

specimen shows active amoeba w/ cytoplasm containing ingested RBC, nucleus with central karyosome. Parasite is ____

A

E. histolytica

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16
Q

Blood smear shows RBC with Schuffner dots. Infection is due to ____

A

P. vivax

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17
Q

Thick blood smear taken at night showed microfilaria larva with well developed sheaths

A

W. bancrofti

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18
Q

Blood smear showed trypanosome lying in characteristic C-shape. Organism is _____

A

T. cruzi

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19
Q

Patient presents relapsing malaria. Which is responsible

A

P. vivax

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20
Q

Red cells in blood smear shows multiple infections with ring stages. Indicates infection with:

A

P. falciparum

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21
Q

Worm egg with terminal spine found in urine sample indicates infection with____

A

S. haematobium

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22
Q

Specimen shows protozoan w/sucking disc, 2 nuclei and eight flagella. Organism is ___

A

G. lamblia

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23
Q

T/F: serological test is better than any other test in identifying parasitic organisms

A

FALSE

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24
Q

T/F: CSF is valuable in dx of African trypanosomiasis

A

TRUE

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25
Q

T/F: Dientamoeba fragilis may cause diarrhea, abdominal pain and discomfort

A

TRUE

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26
Q

An amoeba, sometimes found in mouth in conditions of pyorrhea

A

Entamoeba gingivalis

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27
Q

T/F: All amoeba produce cyst

A

FALSE

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28
Q

T/F: in bowel discharges, bacillary dysentery produces a much more baundant cellular exudate than amoebic dysentery

A

TRUE

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29
Q

T/F: eosinophils in large numbers may be seen in the stool of acute bacillary dysentery

A

FALSE

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30
Q

T/F: charcot-leyden crystals are a frequent finding in the stool of acute amoebic dysentery

A

TRUE

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31
Q

T/F: The extra-intestinal abscess caused by E. histolytica are sterile

A

TRUE

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32
Q

A lemon-haped protozoan cyst w/ large nucleus containing a large karyosome near the nuclear membrane is ____

A

Chilomastix mesnili

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33
Q

T/F: Giardia infections can cause enteritis

A

TRUE

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34
Q

T/F: IgM is greatly increased with African trypanosomiasis

A

TRUE

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35
Q

During sleeping stage, what body fluid should be tested to diagnose sleeping sickness?

A

CSF

36
Q

During febrile stage, what body fluid should be tested to diagnose sleeping sickness?

A

blood

37
Q

____ sign is theearly diagnostic sign for Chaga’s disease

A

Romana’s sign

38
Q

What is the vector of T. cruzi?

A

Kissing fly (Triatoma)

39
Q

Which stage of C. parvum can be found in stool?

A

oocyst

40
Q

T/F: Anopheles mosquito is the only vector of malaria

A

TRUE

41
Q

the female sex cell of malaria is known as

A

macrogametocyte

42
Q

a malarial parasite undergoing asexual multiplication and characterized by dividing masses of chromatin is called

A

schizont

43
Q

male malarial parasite is called:

A

microgametocyte

44
Q

oval presegmenters can be found in which malaria species

A

P. ovale

45
Q

which malarial species has the longest sexual cycle

A

P.malariae

46
Q

rosette formation of merozoites in schizonts can be seen in which malarial specie

A

P. falciparum

47
Q

which malarial parasite enlarges RBC

A

P. vivax

48
Q

not all stages of parasite occur in peripheral blood in which malaria sp?

A

P. falciparum

49
Q

multiple infection in same RBC rarely occurs in which malaria sp?

A

P. vivax

50
Q

crescent shaped gametocyte are characteristic of which malarial sp?

A

P. falciparum

51
Q

____ fever: a highly fatal disease associated with P. falciparum

A

Blackwater fever

52
Q

Reservoir animal of Balantidium coli

A

cochon :)

53
Q

T/F: all flukes require snail as IH

A

TRUE

54
Q

largest fluke found in man

A

F. buski

55
Q

T/F: unless the scolex of a tapeworm is removed from the intestine, adult worm may regrow

A

TRUE

56
Q

T/F: adult tapeworms are only foun d in the smallintestine of man

A

TRUE

57
Q

sparganosis infection is due to which organism

A

D. latum

58
Q

what is the largest adult worm

A

A. lumbricoides

59
Q

which nematode does not ordinarily produce eggs in feces

A

S. stercoralis

60
Q

which nematode egg is football shaped with typical plug at the end of each pole

A

T. trichiura

61
Q

T/F: larva of A. lumbricoides can be found in sputum

A

TRUE

62
Q

T/F: Periorbital edema is an early sign of acute infection of T. trichiura

A

FALSE (T. spiralis)

63
Q

Old world hookwork

A

Ancylostoma duodenale

64
Q

T/F: chyluria can be frequently seen in cases of Bancroft’s filariasis

A

TRUE

65
Q

Eye worm

A

Loa loa

66
Q

Guinea worm

A

Dracunculus medinensis

67
Q

visceral larva migrans is caused by

A

Toxocara canis

68
Q

which is not a type of symbiotic relationship: a) parasitism b)commensalism c) mutualism d) symbiolism

A

D

69
Q

Amoeba move by means of a) pseudopodia b)cilia c) flagellla d) none

A

A

70
Q

if roundworms:nematodes then flatworms: ______

A

platyhelminthes

71
Q

T/F: Giardia infections always cause severe diarrhea

A

FALSE

72
Q

T/F: trichomonas hominis is found in the urethra of man

A

FALSE

73
Q

T/F: trichomonas vaginalis can be found in the urtethra of man

A

TRUE

74
Q

Trypanosoma cruzi multiplies in the human body in which form

A

amastigote

75
Q

T/F:African trypanosomes are transmitted by tsetse flies

A

TRUE

76
Q

T/F: leishmania are transmitted by bite of sandfly

A

TRUE

77
Q

Leishmania can be found in macrophages: T/F

A

TRUE

78
Q

Most characteristic feature of blackwater fever

A

intravascular hemolysis

79
Q

malarial parasite stage infective to man

A

sporozoite

80
Q

T/F: ookinete can be foun in humans

A

FALSE (mosquito)

81
Q

usual location of E. granulosus in man

A

liver

82
Q

usual location of H. nana in man

A

intestine

83
Q

usual location of D. caninum in man

A

intestine

84
Q

patient present with acute diarrhea after eating pork meat is likely to be infected by which nematode?

A

T. spiralis

85
Q

usual location of D. medinensis in man

A

subcutaneous tissue

Parasitology (5 decks)

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