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Clinical Parasitology > Blood and tissue nematodes > Flashcards

Blood and tissue nematodes Flashcards

1
Q

Lays eggs in unsegmented stage (unembryonated).

A

Oviparous

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2
Q

Lays eggs in segmented stage (embryonated).

A

Ovoviviparous

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3
Q

larva

A

Viviparous

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4
Q

The time and day whereby blood contains
abundant number of micrifilariae, as compared to other hours.

A

Periodicity

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5
Q

occurring at night.

[periodicity]

A

nocturnal

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6
Q

occurring during the day.

[periodicty]

A

diurnal

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7
Q

timing of occurrences not clear-cut.

[periodicity]

A

subperiodic

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8
Q

Presence or absence of a delicate transparent covering known as a?

A

sheath

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9
Q

[2] Morphological forms

A
  1. Adult worms
  2. Larvae/Microfilarae
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10
Q

Appear creamy white and assume a threadlike appearance.

[morphological forms]

A

Adult worms

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11
Q

Males may measure from 20 to 500 mm in length, which is often half that of typical adult females.

[morphological form]

A

Adult worms

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12
Q

Common name of Wuchereria Bancrofti

A

Bancroft’s Filaria

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13
Q

Nocturnal periodicity: peak hour of specimen collection are between 9:00 pm to 4:00 am.

A

Wuchereria Bancrofti

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14
Q

Stimulates microfilariae to come out even during daytime.

A

Diethylcarbamizine

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15
Q

Detection of Circulating Filarial Antigen (CFA)

A

Wuchereria Bancrofti

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16
Q

[3] Vector of Wuchereria Bancrofti

A
  1. Aedes
  2. Culex
  3. Anopheles
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17
Q

May be found in the subtropical and tropical areas of the world including the philippines.

A

W. bancrofti

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18
Q

Common name of Brugia Malayi

A

Malayan Filariasis, Malayan Filarial Worm

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19
Q

Disease associated in Brugia Malayi

A

Malayan Filariasis, Elephantiasis

20
Q

Nocturnal/Subperiodic periodicity

A

Brugia Malayi

21
Q

Areas of the world in which the mosquitoes breed are the primary locations in which this filariae may be found including philippines.

A

Brugia Malayi

22
Q

Although humans are considered to be the primary definite host, it is also known to infect felines and monkeys.

A

Brugia Malayi

23
Q

[3] Transmitted by the mosquito in Brugia Malayi

A
  1. Mansonia sp.
  2. Anopheles
  3. Aedes
24
Q

Fevers may take months to years to develop after initial infection.

A

Brugia Malayi

25
Q

Elephantiasis of the legs.

A

Brugia Malayi

26
Q

Treatment for this is similar to that for W. bancrofti.

A

Brugia Malayi

27
Q

Most useful medication is Diethylcarbamazine (DEC).

A

Brugia Malayi

28
Q

Common name of Loa Loa

A

African eye worm
Oculi Humanis

29
Q

Disease associated in Loa Loa

A

Loaisis

30
Q

Diurnal periodicity: collection is done during the midday hours between 10:15 am to 2:15 pm.

A

Loa Loa

31
Q

The migrating adult worms may be extracted from a variety of body location including the eye.

A

Loa loa

32
Q

Human infection of Loa loa is initiated by the bite of an infected Chrysops fly, Tabanid, mango fly.

A

Loa loa

33
Q

Eosinophilia and calabar or transient subcutaneous swelling.

A

Loa loa

34
Q

Adult worms multiply throughout the subcutaneous tissues.

A

Loa loa

35
Q

The microfilariae are present in the blood but not until years after the initial infection making the diagnosis more difficult.

A

Loa loa

36
Q

The endemic regions of infection correlate with the areas where the vector flourishes.

A

Loa loa

37
Q

After initial bite, individuals infected with Loa loa may experience pruritis and localized pain.

A

Loa loa

38
Q

Adult worms may only be noticeable when seen migrating under the conjunctiva of the eye or crossing under the skin of the bridge of nose.

A

Loa loa

39
Q

Common name of Onchocerca Volvulus

A

Blinding Convulated Worm

40
Q

Disease associated in Onchocerca Volvulus

A

River blindness, Onchocerciasis

41
Q

skin nips

A

Onchocerca Volvulus

42
Q

Organisms residing in the eye are best seen by opthalmologic examination using slit lamp.

A

Onchocerca volvulus

43
Q

Presence of Eosinophilia and ocular discomfort.

A

Onchocerca volvulus

44
Q

Vector: Simulium or Black fly

A

Onchocerca volvulus

45
Q

It is distributed primarily in equatorial Africa and central america.

A

O. volvulus

46
Q

When eye becomes involved , lesions may lead to blindness.

A

Onchocerca volvulus

Clinical Parasitology (13 decks)

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