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Parasitology LAB > SPOROZOANS > Flashcards

SPOROZOANS Flashcards

1
Q
  • sexual reproduction with the development of spores, taking place in the mosquito
A

SPOROGONY

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2
Q
  • mature sexual cell
A

GAMETE

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3
Q
  • the cell resulting from the union of the male and female gametes
A

ZYGOTE

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4
Q
  • the motile vermicular zygote
A

OOKINETE

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5
Q
  • the form which develops within the sporocyst and infects the salivary
    gland of the mosquito
A

SPOROZOITE

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6
Q
  • the asexual multiplication of sporozoa by fission, taking place in the
    vertebrate host
A

SCHIZOGONY

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7
Q
  • the vegetative or feeding stage of the parasite which contain one
    nucleus and develops in the RBC
A

TROPHOZOITE

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8
Q
  • a stage following the trophozoite stage of the parasite which contain one
    nucleus and develops in the RBC
A

SCHIZONT

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9
Q
  • the cell resulting from the final division of a schizont
A

MEROZOITE

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10
Q

GAMETOCYTE- a sexually differentiated but immature cell
a)_____ - immature female cell
b)_____ - immature male cell

A

Macrogametocyte

Microgametocyte

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11
Q
  • development of the parasite in the liver cells prior to entry into RBC
A

PRE-ERYTHROCYTIC CYCLE

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12
Q
  • the development of the parasite inside RBC
A

ERYTHROCYTIC CYCLE

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13
Q
  • stage of development of the parasite which takes place in the liver cells.

In this stage, the malarial parasites do not contain pigments.

A

• EXO-ERYTHROCYTIC CYCLE

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14
Q

(the infected RBC is enlarged)
A. Early trophozoite or ring form

• shape: delicate ring
size: 1/3 of the infected RBC

structures:
a single fine chromatin dot a ring of cytoplasm

A

Plasmodium vivax

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15
Q

Growing trophozoite (developing trophozoite)

shape: irregular or amoeboid

size: large

structures:
a single chromatin dot

cytoplasm is very irregular

may observe fine scattered malarial pigments in the cytoplasm of the parasite

Schuffner’s dots may be seen as stipplings in the cytoplasm of the RBC

A

Plasmodium vivax

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16
Q

Mature trophozoite
• shape: rounded, somewhat ambeboid

• size: the parasite almost fills up the infected RBC

structures:
a single chromatin or nucleus, larger dot and surrounded by vacuole

cytoplasm is rounded, occasionally it may appear arnoeboid with scattered pigments

Schuffner’s dots are present

A

Plasmodium vivax

17
Q

Young Schizont
• shape: rounded or somewhat amoeboid

size: almost fills up the infected RBC

• structures:
chromatin divides into 2 masses

cytoplasm is rounded or slightly irregular with scattered pigments

Schuffner’s dots present:

A

Plasmodium vivax

18
Q

Growing Schizont

shape: somewhat amoeboid

size: large, almost fills up the infected RBC

• structures:
chromatin dividing into several irregular masses

cytoplasm is sornewhat amoeboid with scattered pigments

Schuffner’s dots present.

A

Plasmodium vivax

19
Q

Mature Schizont

shape: segrnented

• size: fills up the infected RBC

structures:
consists of merozoites 12 - 18 in number; a merozoite consists of a single chromatin and cytoplasm

pigrents are aggregated

Schuffner’s dots are present

A

Plasmodium vivax

20
Q

Microgametocyte
• shape: rounded or oval, compact

• size: may fill up the infected RBC

• structures:
diffuse chromatin, absence of vacuole around the nucleus

cytoplasm is pale blue with abundant scattered coarse pigments

  • Schuffner’s dots are numerous
A

Plasmodium vivax

21
Q

Macrogametocyte

shape: rounded or oval, compact

size: may fill up the infected RBC, usually larger than the microgametocyte

structures:
chromatin is compact, peripheral mass, absence of vacuole around the nucleus

cytoplasm is deep blue with coarse pigments. More pigments are found around the periphery of the cytoplasm of the parasite

Schuffner’s dots are abundant

A

Plasmodium vivax

22
Q

Early trophozoite or ring form
shape: very delicate ring, multiple infection is common, appliqué forms are frequent

size: 1/5 of the infected RBC

structures:
fine chromatin dots, usually 2 bluish ring of cytoplasm

A

Plasmodium falciparum

23
Q

Microgametocyte

shape: kidney-shaped with rounded ends

size: larger than the infected RBC

structures:
chromatin is diffused
cytoplasm is pale blue with abundant, scattered pigments

A

Plasmodium falciparum

24
Q

Macrogametocyte

• shape: crescent-shaped with rounded ends

• size: larger than RBC

structures:
compact chromatin is located near the center

the cytoplasm is dark blue with more compact pigments located near the center

A

Plasmodium falciparum

25
Q
  1. Any Plasmadium with more than one nucleus is a schizont of (3).

_______schizonts are found in the visceral blood

A

P. vivax
P. ovale
P. malariae

P. falciparum

26
Q

Any Plasmcidium with one nucleus, numerous hematin granules and almost fills up the infected RBC is a gametocyte of (3).

Gametocytes of P. falciparum are_____-shaped.

A

P. vivax, P. ovale, and P. malariae

kidney

27
Q

Any Plasmodium with one nucleus, with amoeboid cytoplasm and few pigments is a_______

A

growing trophozoite

28
Q

The ring forms are morphologically characteristic for_____ but species identification cannot be made on this basis.

One has to see the different stages of the parasite.

A

Plasmodia

29
Q

Enlarged infected RBC is seen in ______ infection.

A

P. vivax

30
Q

Schuffner’s dots are seen in_____.

A

Plasmodium vivax

31
Q

Plasmodium vivax has more than____ chromatin masses in the mature schizont.

A

12

32
Q

Plasmodia found inside normal sized infected BC with stages older than the ring form is______

A

Plasmodium malariae

33
Q

Plasmodium with a band for cytoplasm is_____

A

Plasmodium malaria

34
Q

If all the malarial stages found in the peripheral blood smear is of the ring form, these could be______

A

Plasmodium falciparum

35
Q

STAGES FOUND IN THE INVERTEBRATE HOST (Mosquito)

A

Oocyst
Sporozoite

36
Q

A. Trophozoite stage

shape: large, ovoid, pointed anteriorly and broadly rounded posteriorly

size: 50 - 200 miera in length, 40 - 70 miera in width

A

Balantidium coli

37
Q

Trophozoite

entire body is covered with uniform length of short cilia

the cytostome, a slightly curved conical depression, is located at the anterior end

the cytopyge, a small opening at the posterior end is sometimes seen

the cytoplasm contains numerous food vacuoles with one or two contractile vacuoles

there are two nuclei, a large bean-shaped macronucleus and a micronucleus, a small rounded structure located at the curvature of the macronucleus

A

Balantidium coli

38
Q

Cystic Stage

shape: rounded
size: 45 - 65 micra

A

Balantidium coli

39
Q

Cyst

  • thick double walled cyst wall

cytoplasm is granula

the macronucleus and micronucleus are present

A

Balantidium coli

Parasitology LAB (37 decks)

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