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Plasmodium Flashcards

1
Q

[6] Stages of Development of Plasmodium Spp.

A
  1. Ring forms
  2. Developing/ Growing Trophozoites
  3. Immature/Presegmenting Schizonts
  4. Mature Schizonts
  5. Microgametocytes
    6.Macrogametocytes
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2
Q

early trophozoites.

[stages of development of plasmodium spp]

A

Ring forms

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3
Q

As the name implies, refers to a ring like appearance of the malarial parasite following invasion into a previously healthy RBC.

[stages of development of plasmodium spp]

A

Ring forms

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4
Q

Space inside the ring is known as a vacuole.

[stages of development of plasmodium spp]

A

Ring forms

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5
Q

Remnants of the cytoplasmic circle and chromatin dot are still intact until late development.

[stages of development of plasmodium spp]

A

Developing trophozoites

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6
Q

The parasite is actively growing during this stage, the amount of RBC space invaded is significantly more than that of the ring form.

[stages of development of plasmodium spp]

A

Developing trophozoites

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7
Q

Active chromatin replication is seen.

[stages of development of plasmodium spp]

A

Immature schizonts

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8
Q

Expands and occupies more space within the RBC.

[stages of development of plasmodium spp]

A

Immature Schizonts

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9
Q

Merozoites: emergence of the fully developed stage of the asexual sprozoa trophozoite.

[stages of development of plasmodium spp]

A

Mature schizonts

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10
Q

Typical microgametocyte is roundish in shape (except P. falciparum, which is crescent-shaped)

[stages of development of plasmodium spp]

A

Microgametocytes

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11
Q

Large diffuse chromatin mass that stains pink to purple and is surrounded by a colorless to pale halo.

[stages of development of plasmodium spp]

A

Microgametocytes

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12
Q

pigment is usually visible.

[stages of development of plasmodium spp]

A

Microgametocytes

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13
Q

Round to oval (except P. falciparum, which is crescent shaped)

[stages of development of plasmodium spp]

A

Macrogametocytes

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14
Q

Pigment is also present, and its color and distribution in this morphologic form vary by individual Plasmodium species.

A

Macrogametocytes

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15
Q

Disease: malignant malaria, aestivo-autumnal, falciparum malaria, subtertian malaria, pernicious malaria, Black water fever malaria.

[Plasmodium spp.]

A

Plasmodium Falciparum

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16
Q

It is most prevalent in the tropics and subtropics.

[Plasmodium spp.]

A

Plasmodium Falciparum

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17
Q

It causes the most severe form of malaria.

[Plasmodium spp.]

A

Plasmodium Falciparum

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18
Q

It still remains almost unchallenged as the greatest killer of the human race over most parts of Africa and elsewhere in the tropics.

[Plasmodium spp.]

A

Plasmodium Falciparum

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19
Q

Maurer’s dots occasionally seen.

[Plasmodium spp.]

A

Plasmodium Falciparum

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20
Q

Pigment: BLACK, coarse and conspicuous in parasite.

[Plasmodium spp.]

A

Plasmodium Falciparum

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21
Q

Number of merozoites: 6-32, average is 20-24

[Plasmodium spp.]

A

Plasmodium Falciparum

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22
Q

Schizonts: bad prognosis

[Plasmodium spp.]

A

Plasmodium Falciparum

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23
Q

Stages found in Circulating Blood: Young, growing trophozoites (ring forms) and gametocytes.

[Plasmodium spp.]

A

Plasmodium Falciparum

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24
Q

Young rings are small, delicate, often with double chromatin dots, accole, applique.

[Plasmodium spp.]

A

Plasmodium Falciparum

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25
Disease: vivax malaria or benign tertian malaria. [Plasmodium spp.]
Plasmodium Vivax
26
Most widespread, found in most endemic areas including some temperate zones. [Plasmodium spp.]
Plasmodium Vivax
27
It is more common in temperate than in tropical region. [Plasmodium spp.]
Plasmodium Vivax
28
It is the second common Malaria in the Philippines. [Plasmodium spp.]
Plasmodium Vivax
29
Ring forms occupies 1/3 diameter of RBC. [Plasmodium spp.]
Plasmodium Vivax
30
Schuffner’s dots present in all stages except early young forms. [Plasmodium spp.]
Plasmodium Vivax
31
Irregular, ameboid trophozoites, has spread out appearance. [Plasmodium spp.]
Plasmodium Vivax
32
Pigment: GOLDEN BROWN, inconspicuous [Plasmodium spp.]
Plasmodium Vivax
33
Number of merozoites: 12-24, average is 16 [Plasmodium spp.]
Plasmodium Vivax
34
Disease: malariae or quartan malaria [Plasmodium spp.]
Plasmodium Malariae
35
Similar range as P. falciparum, but less common and patchy distribution. [Plasmodium spp.]
Plasmodium Malariae
36
Common in tropical Africa, Burma, Sri lanka, India, Malaysia and Indonesia. [Plasmodium spp.]
Plasmodium Malariae
37
It is occasionally seen in the Philippines. [Plasmodium spp.]
Plasmodium Malariae
38
Ziemann’s dots rarely seen. [Plasmodium spp.]
Plasmodium Malariae
39
Rounded, compact trophozoites with dense cytoplasm. [Plasmodium spp.]
Plasmodium Malariae
40
Band form trophozoites occasionally seen. [Plasmodium spp.]
Plasmodium Malariae
41
Pigment: DARK BROWN, conspicuous [Plasmodium spp.]
Plasmodium Malariae Plasmodium Ovale
42
Rosette schizonts occasionally seen. [Plasmodium spp.]
Plasmodium Malariae
43
No. of merozoites: 6-12, average is 8. [Plasmodium spp.]
Plasmodium Malariae
44
Disease: ovale malaria, Benign tertian malaria. [Plasmodium spp.]
Plasmodium Ovale
45
It is the least common Plasmodium infecting man. [Plasmodium spp.]
Plasmodium Ovale
46
It occurs mostly in tropical Africa, principally on the west coast and is endemic in Ethiopia. [Plasmodium spp.]
Plasmodium Ovale
47
Rounded, compact trophozoites, occasionally slightly ameboid. [Plasmodium spp.]
Plasmodium Ovale
48
Growing trophozoites have large chromatin mass. [Plasmodium spp.]
Plasmodium Ovale
49
No. of merozoites: 6-14, average is 8. [Plasmodium spp.]
Plasmodium Ovale
50
A primate malaria parasite commonly found in Southeast Asia. [Plasmodium spp.]
Plasmodium Knowlesi
51
Schuffner’s dots present in all stages except early "ring forms". [Plasmodium spp.]
Plasmodium Ovale
52
It causes malaria in long-tailed macaques (Macaca fascicularis), but it may also infect humans, either naturally or artificially. [Plasmodium spp.]
Plasmodium Knowlesi
53
The “fifth major human malaria parasite”. [Plasmodium spp.]
Plasmodium Knowlesi
54
This is an emerging infection that was reported for the first time in humans in 1965. [Plasmodium spp.]
Plasmodium Knowlesi
55
It accounts for up to 70% of malaria cases in South East Asia where it is mostly found. [Plasmodium spp.]
Plasmodium Knowlesi
56
In developing trophozoites of this Plasmodium spp. band forms may appear that are similar in appearance to P. malariae. [Plasmodium spp.]
Plasmodium Knowlesi
57
As the vacuole is lost during maturation of the trophozoite stage, the parasite becomes smaller and more compact. [Plasmodium spp.]
Plasmodium Knowlesi
58
The pigment appears as dark grains and the red nucleus increases in size. [Plasmodium spp.]
Plasmodium Knowlesi
59
Stippling appears, often referred to as 'Sinton and Mulligan's' stippling. [Plasmodium spp.]
Plasmodium Knowlesi
60
The typical fever in Plasmodium Knowlesi becomes? [Plasmodium spp.]
Quotidian

Clinical Parasitology (19 decks)

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