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MTAP 1 > Parasitology > Flashcards

Parasitology Flashcards

1
Q

Which of the Protozoan cyst below often contain chromatoidal bars, which tend to be splinter shaped and irregular?

A

B. Entamoeba coli

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2
Q

Which refers to the protozoan parasite of pigs and monkeys

A

A. Entamoeba polecki

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3
Q

What protozoan parasite whose cytosome is referred to as a “shepherd’s crook” with a lemon or pear shape

A

C. Chilomastix mesnili

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4
Q

Which protozoan resembles Chilomastix cyst with “bird beak” fibril arrangement

A

D. Retortamonas intestinalis

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5
Q

Which of the following dimensions in the template used in Kato Katz technique will containing 20 mg of stool

A

D. 6.5 mm x 0.5mm

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6
Q

Which nucleus is responsible for reproduction in the trophozoite stage of the Balantidium coli?

A

Macronucleus

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7
Q

Which of the following is not a characteristic of Dientamoeba fragilis?

A

Generally has 4 nuclei

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8
Q

What is the treatment of choice for balantidiasis

A

Tetracycline

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9
Q

A 40 y.o male with HIV, presented with diarrhea of 2 weeks. Acid-fast staining of his stool revealed red-pink doughnut-shaped circular organisms resembling oocysts. What parasite is the possible cause of his diarrhea

A

Cryptosporidium hominis

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10
Q

Ground itch” or “dew itch” is a dermatitis caused by which of the following nematodes:

A

Necator americanus

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11
Q

Long-standing and heavy infection can cause protein-losing enteropathy. Which parasite is responsible for this:

A

Strongyloides stercoralis

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12
Q

Which of the following does not undergo heart- lung migration?

A

Whipworm

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13
Q

Which of these drugs is used to treat protozoan infection?

A

Mebendazole

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14
Q

Nocturnal pruritus is commonly seen in which of the following parasitic infections?

A

Enterobiasis

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15
Q

All of the following are components of the kato thick technique except?

A

Orcein

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16
Q

What is the parasite that caused the “Mystery” disease in Compostella valley?
I’m

A

Pudoc worm

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17
Q

What is best way to distinguish Entamoeba histolytica from Entamoeba dispar infection?

A

PCR method

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18
Q

Steatorrhea in Giardiasis is caused by what type of diarrhea?

A

Osmotic diarrhea

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19
Q

In the Fischer indole synthesis, from what amino acid is converted in to indoleacetic acid which would finally be a derivative of skatole?

A

Tryptophan

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20
Q

A young patient complains of epigastric pain and dyspnea. Upon observation the patient had yellowish sclerae. The patient’s stool was observed as clay-colored. What parasitic infection could have caused the patient’s condition?

A

Biliary ascariasis

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21
Q

Blythe complains of vaginal pruritus after meeting with Ford and upon internal examination, red spots were seen on her cervix which could be likened to a strawberry. What could be the cause of her complaint?

A

Trichomonas vaginalis

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22
Q

Pyrantel pamoate is always taken in tandem with albendazole during a helminthic infection. What is the reason for this?

A

It prevents the nematodes from migrating during treatment and is thus synergistic

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23
Q

This drug’s mode of action is to inhibit protein synthesis by interacting with the DNA and causes helical DNA structure breakage once it diffuses in to the organism. Identify what drug is stated.

A

Metronidazole

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24
Q

Which of the following diseases does not require an occult blood test?

A

Hemorrhoids

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25
Q

A patient came in with painful bowel movements which upon macroscopic examination contained blood and mucus. Patient noted that the physician noted rectal prolapse on physical examination. What is the expected ova description if the cause was parasitic?

A

Barrel-shaped, thick-shelled and possess a pair of polar “plugs” at each end

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26
Q

Respiratory distress due to nematode infection is most likely due to what action of the parasites?

A

Heart lung migration

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27
Q

What part of the gastrointestinal tract is commonly affected by amebae?

28
Q

A stool specimen has been examined one and a half hour after it has been passed. What will not be an expected finding?

A

Protozoan trophozoite

29
Q

A patient came in with complains of pruritus at night and restlessness at night. The physician requested a scotch tape method. The patient has just taken a bath ten minutes before coming in to the lab. What will be the most likely expected findings of the test?

A

Absence of Enterobius ova

30
Q

A patient has been requested for a occult blood test. The patient has taken a cocktail of ibuprofen and aspirin a few hours ago for the lightheadedness. What will be the expected results?

A

False positive

31
Q

A specimen was examined microscopically on DFS. 2 ova/HPO were seen for one length, what will be the laboratory report?

32
Q

Pruritic dermatitis is caused by what action of the parasites?

A

Skin penetration

33
Q

Without the help of PCR for helping differentiate Entamoeba histolytica from Entamoeba hartmanni. What else could aid in the differentiation of the two species in the laboratory?

A

Check if the patient is manifesting symptoms of a protozoan infection

34
Q

Cindy received diarrheic stool, what procedure should she perform

A

Iodine and NSS

35
Q

Process of trophozoite to cyst

A

encystation

36
Q

What is the association between man and Entamoeba coli

A

Commensalism

37
Q

What form of an Ascaris lumbricoides is present in the lungs?

A

Parasite not present in sputum

38
Q

Which of the following preservatives to be employed in trichrome stain?

39
Q

How many nuclei are present in a mature cyst in an Entamoeba polecki

40
Q

Giardia duodenalis is the causative agent of beaver fever
II. It is from beavers

41
Q

Which among the parasites is transmitted through sexual intercourse?

A

T. vaginalis and G. lamblia

42
Q

Polymyarian parasite

A

Ascaris lumbricoides

43
Q

Found in Cecum and colon and can bury itself in intestinal walls

A

Trichuris trichura

44
Q

Dissolve albuminous materials

45
Q

Color of rbc in unstained stool

46
Q

Best recovery for coccidian

A

Sheather’s egg floatation

47
Q

Capillaria philippensis

A

Burborygmy

48
Q

Disease of acantamoeba

49
Q

E.histolytica

50
Q

Disintegration of eosinophils

A

Charcot-Leyden Crystals

51
Q

2 forms of amoeba

A

trophozoite and cyst

52
Q

20 ova / HPF

53
Q

Parasite that is detected using Cellophane tape method

A

Both (pinworm and societal)

54
Q

Host that harbors a parasite that can infect someone but has no clinical symptoms

55
Q

Only ciliate to cause disease and largest protozoan parasite man ni

A

Balantidum coli

56
Q

seen in lakes and pools (also aircon, tap water, heating units)

A

naegleria fowleri

57
Q

Parasite that causes dew itch/ground itch

A

Necator Americanus

58
Q

Ga line up ang damu nga formed specimen, then may ara sa last watery specimen. Ano ang dapat himuon?

A

Perform the watery first, since trophoziote disintegrate after 30 mins

59
Q

All are advantages of formalin as fixative EXCEPT
Easy to prepare
Long shelf life
Preserve specimen longer
Used to recover trophozoite

A

Long shelf life

60
Q

All are recovered in concentration except
Cyst
Larvae
Helminth eggs
Trophozoite

A

Larvae and trophozoite

61
Q

Not a fixative
Buffered glycerol
CH2O
Modified PVA
SAF

A

Buffered glycerol

62
Q

Mistaken as yeast cells in direct fecal smear

63
Q

Which of the ff is a polymyarian type wherein somatic muscle arrangements are numerous and project well into the body cavity?

64
Q

Parasite nagbalik sa colon… strongyloides

A

Autoinfection

MTAP 1 (13 decks)

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