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PARASITOLOGY > Chapter 5: Review Questions > Flashcards

Chapter 5: Review Questions Flashcards

0
Q

An amebae that has a chromatoid bodies in the cyst stage

A

Entamoeba

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1
Q

The motile, reproducing stage, feeding stage of the Protozoa

A

Trophozoites

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2
Q

Amebiasis is caused by?

A

E. histolytica

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3
Q

Which organ of the body is most often involved in extra intestinal amebiasis?

A

Liver

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4
Q

Amebae that inhabits the gastrointestinal tract of man are nonmotile, no feeding and in infective stage

A

Cyst

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5
Q

Mature cyst of E. polecki have how many nuclei?

A

1

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6
Q

Has cyst with chromatoid bodies that have two pointed ends or that can be round, triangular or oval?

A

E. coli

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7
Q

Is likely to ingest red blood cell?

A

E. histolytica

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8
Q

The mature cyst of Entamoeba histolytica has how many nuclei?

A

Four (4)

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9
Q

Failure to find bacteria in purulent spinal fluid should alert one to find the possibility of an infection with?

A

Amebae

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10
Q

Trophozoite of achromatic granules surrounding its karyosomal chromatin?

A

I. butschilii

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11
Q

Double walled, wrinkled cyst form

A

A. Castellanii

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12
Q

A cyst that possesses a single nucleus and a large glycogen vacuole that stains deeply with iodine belong to?

A

I. butachilii

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13
Q

Some amebae have spiny, hyaline extensions called:

A

Acanthopods

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14
Q

Best staining procedure for species of naegleria and Acanthamoeba?

A

Hematoxylin and Eosin and Wright stain

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15
Q

Amebae inhabiting the central nervous system enter the body through the?

A

Nasal mucosa

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16
Q

The trophozoites whose karyosomal chromatin appears as a rosette of 4-6 granules is identified as:

A

N. fowleri

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17
Q

Usually mistaken as a cyst of amebae?

A

Blastocystis hominis

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18
Q

Instetinal flagellates are usually which shape in the trophozoites stage?

A

Pear-shaped

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19
Q

Is pathognomic for G. lamblia and the stage it is found in?

A

Ventral sucking disk-trophozoites

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20
Q

A flagellate that Can be pathogen in small intestine

A

G. lamblia

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21
Q

Intestinal flagellate trophozoite has a sucking disc, 2 nuclei, 8 flagella and an axostyle

A

G. lamblia

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22
Q

Red and white blood cells in stool specimen are characteristics of :

A

Bacillary dysentery

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23
Q

A pear-shaped flagellate with jerky motility is found in a urine specimen identified as:

A

T. vaginalis

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24
Q

The only bilaterally symmetrical protozoan is?

A

G. lamblia

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25
Q

Which of the following is the intracellular form of blood and tissue flagellates

A

Trypanosomal

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26
Q

Cause of African sleeping sickness

A

Trypanosoma

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27
Q

The vector of African sleeping sickness

A

Tsetse fly (Glossina)

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28
Q

Specie of trypanosoma that cause Chagas’ disease

A

Cruzi

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29
Q

How is trypanosoma cruzi transmitted?

A

Bite of reduviid bug

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30
Q

A chagoma is a lesion seen in infections with:

A

Trypanosoma cruzi

31
Q

Organism that cause kala-azar

A

L. donovani

32
Q

Is the only ciliates that is pathogenic in humans?

33
Q

Nucleus in trophozoite of Balantidum coli is the reproductive one?

A

Micronucleus

34
Q

The definitive host of plasmodium

A

Female (Anopheles Mosquito)

35
Q

Malarial organisms present as pale, very ameboid ring trophozoite, infecting a large pale red blood cell with dots of hgb

36
Q

Malarial organism preferentially invades reticulocytes

37
Q

Schizont resembles as “fruit pie” in which meron outer form a rosette around the malarial pigment

A

P. malariae

38
Q

Band from trophozoite stretching across the red blood cell

A

P. malariae

39
Q

Ziemanns stippling

40
Q

Maurer’s dot

A

Falciparum

41
Q

Malarial org. features ring trophozoite that have double chromatin dots, appliqué form often have multiple parasites in the infected red blood cell

42
Q

Coarse red dots with large place red cell with frimbriated edges

43
Q

The sexual reproduction cycle in plasmodium and coccidia is referred to as

44
Q

Infective stage of malarial parasites to the vector

A

Gametocyte

45
Q

Infective stage of malarial parasites to the human

A

Sporozoites

46
Q

Synchronized rupture of the red cells in every 72 hours

47
Q

What stage of Isospora is infective to humans

48
Q

Isospora belli immature oocyts contains

A

Sporoblast

49
Q

Definitive and intermediate host of Toxoplasma gondii

50
Q

Appearance of Toxoplasma gondii in tissue fluids of man

51
Q

Example of test for Cryptosporidium

A

Sheather’s sugar floatation

52
Q

Parasite that is associated with AIDS

A

Cryptosporidium

53
Q

Schistosome eggs that maybe recovered in rectal biopsy

A

S. mansoni and S. japonicum

54
Q

The scientific name of the head of a tapeworm

55
Q

Worms that have an oral and ventral suckers in the adult stage

A

Trematodes

56
Q

First intermediate host of the flukes

57
Q

Common names for schistosomes

A

Blood flukes

58
Q

What is schistosomule

A

Cercaria minus tail

59
Q

A hexacant embryo enclosed in a radially striated shell belongs to the genus

60
Q

Tapeworm infection has to be treated with great care so that man doesn’t not acquire the larval infection

A

Taeniasis solium

61
Q

A bile stained eggs that is 75 microns as it’s greater diameter and contains a hexacant embryo that lacks polar knobs

A

H. diminuta

62
Q

Hydatid cyst infection if man is due to a larva of the tapeworm

A

E.granulosus

63
Q

First intermediate host of D. latum

64
Q

Second intermediate host of D. latum

A

Fresh water fish

65
Q

What is the infective stage of the broad fish tapeworms to human

A

Plerocercoid

66
Q

Eggs that are bile stained and have clear polar plugs belongs to

67
Q

Unholy triad

A

T. trichiura, Hookworm and Ascaris lumbricoides

68
Q

First stage of intestinal nematode

A

Rhabditiform larva

69
Q

A roundworm that inhabits the small intestines and is usually demonstrated as rhabditiform larvae in the fecal specimen

A

Threadworm

70
Q

Dirofilaria immitis is the

A

Dog heartworm

71
Q

Body of tapeworm

72
Q

When stained with trichome stain, chromatoid bodies appear what color

A

Bright to red

73
Q

Specific gravity of zinc sulfate

74
Q

Venipuncture blood is not recommended for

A

Malaria, Babesia , hemoflagellates

PARASITOLOGY (5 decks)

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