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Parasitology > Lesson 2: 7/21/14 > Flashcards

Lesson 2: 7/21/14 Flashcards

0
Q
  1. Amoeba’s locomotor apparatus?
A

Pseudopod - “false feet”

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1
Q
  1. Types of protozoans?
A

Amoebae
Flagellates
Ciliates
Sporozoans

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2
Q
  1. Protozoan with no locomotor apparatus?
A

Sporozoan

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3
Q
  1. Trophozoite?
A

Motile stage
Vegetative stage
–feeding from environment

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4
Q
  1. Cyst?
A 
Nonmotile stage
Infective stage (usual)
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5
Q
  1. Consistencies of stool?
A

Formed–cyst
Soft——csyt
Loose—-trophozoite
Watery—trophozoite

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6
Q
  1. Cyst’s stains?
A 
I2 stain (lugol's / d'antoni's)
--KI / I2 / distilled H2O
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7
Q
  1. Trophozoite’s stain?
A

Methylene blue

–Quenzel’s methylene blue

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8
Q
  1. Amoebae?
A

Lobosea

Phizopoa?

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9
Q
  1. Examples of amoebae?
A 
Entamoeba histolytica (pathogen)
Entamoeba coli (commensal)
Endolimax nana
Iodamoeba butschlii
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10
Q
  1. Entamoeba histolytica’s trophozoite?
A 
"Bull's eye" nucleus
Finger-like pseudopod (bean)!!!
Motility: unidirectional and progessive
RBC inclusions (clean)
*causes dysentery (diarrhea with blood)
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11
Q
  1. Entamoeba coli’s trophozoite?
A

Eccentric nucleus
Bluntly-shaped psudopodia!!!
Motility: nondirectional and slow
Ingests bacteria, fecal debris, yeast (dirty)

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12
Q
  1. Entamoeba histolytica’s cyst?
A

Thin cystic wall
IS: Tetra/quadrinucleated
Centrally-located karyosome
Sausage chromatoidal bars (food reservoir)!!!

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13
Q
  1. Entamoeba coli’s cyst?
A

Thick cystic wall!!!
IS: octonucleated!!!
Eccentric karyosome
Witch broom chromatoidal bars.

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14
Q
  1. Endolimax nana’s cyst?
A

“cross-eyed cyst”
Tetranucleated!!!
Smallest (RBC)!!!
Comma CB

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15
Q
  1. Iodamoeba butschlii’s cyst?
A

Mononucleated!!!

Large I2 stained glycogen vacuole!!!

16
Q
  1. Example of confuser?
A

Blastocystis butschlii

  • Protozoan, cyst-like pathogen
  • large hollow vacuole!!!
  • 2-4 peripheral nuclei!!!
17
Q
  1. Examples of flagellates?
A

Atrial (lumen-dwelling)
-Trichomonas species
-Gardia lamblia
Hemoflagellates (vector-borne)

18
Q
  1. Gardia lamblia’s trophozoite?
A

Binucleated
Pear-shaped!!!
4 pairs of flagella
Axostyle/axonema-bilateral image and symmetry
Ventral sucking discs-increase mucous production-blocks absorption of nutrients-causes steatorrhea-increased fats in feces

19
Q
  1. Gardia lamblia’s cyst?
A

IS: tetranucleated

Parasitology (8 decks)

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