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MUSCULAR > protozoa amoeba > Flashcards

protozoa amoeba Flashcards

1
Q
  • Motile
  • Reproducing
  • Feeding stage
A

trophozoite

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2
Q
  • Non-motile
  • Nonfeeding stage
  • Infective stage to
    humans
A

cysts

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3
Q
  • Cause dysentery
A

Entamoeba histolytica

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3
Q

Transmission of
amebae is generally by

A

ingestion of cysts in
fecally contaminated
food or water.

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4
Q

*Nucleus has karyosome (endosome)

A

Entamoeba histolytica

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5
Q

Mostly with RBC in cytoplasm

A

Entamoeba histolytica

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6
Q
  • Cyst
  • With chromatoid bars (rounded)
A

Entamoeba histolytica

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7
Q

amebiasis stage

A

cysts and trophozoite passed in feces
mature cysts ingested
excystation
trophozoite
multiplication
cyst or trophozoites
exits host

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8
Q
  • Nonpathogenic
  • Size: cyst = < 10um, trophozoite = < 12 um
A

Entamoeba hartmanni

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9
Q

*Cysts and trophozoites are morphologically
identical to E. histolytica

A

Entamoeba dispar

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10
Q

noninvasive

A

Entamoeba dispar

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11
Q

never ingests RBCs

A

Entamoeba dispar

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12
Q

Flask-shaped ulcerations of the intestinal wall and bloody
dysentery

A

pathology of E.histolytica

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13
Q

If amebae penetrate the intestinal wall and spread via
blood,

A

ulceration may occur in the liver, lungs, brain, or other
tissues.

pathology of E.histolytica

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14
Q

are most common and lung invasion usually
results from erosion of the liver abscess

A
  • Liver abscesses
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15
Q

Any of these extraintestinal infections can be fatal.

A

pathology of E.histolytica

16
Q

Transmission (Entamoeba histolytica)

  • The infection can be transmitted sexually by
A

homosexual males

17
Q

Transmission (Entamoeba histolytica)

one cause of the disease known a

A

“gay bowel syndrome.”

18
Q
  • Nonpathogenic
  • Commonly confused with E. histolytica
A

Entamoeba coli

19
Q

large eccentric karyosome

A

nucleus

e.coli

20
Q

irregular peripheral chromatin clumping along the nuclear membrane

A

nucleus

e.coli

21
Q

granular cytoplasm

A

trophozoite

e.coli

22
Q

ingested bacteria but not RBCs.

A

trophozoite

e.coli

23
Q

the pseudopods

e.coli

A

blunt

23
Q

Motility in

e.coli

A

sluggish

24
Q

up to 8 nuclei
* Chromatoid bars (splintered or pointed ends)

A

cyst stage

e.coli

25
Q
  • nonpathogenic
  • found primarily in pigs and monkeys
  • Occasionally in humans
A

Entamoeba polecki

26
Q

resembles both E. histolytica and E. coli morphologically

A

Entamoeba polecki

27
Q
  • large glycogen
A

“inclusion mass”

27
Q
  • no cyst stage
A

Entamoeba gingivalis

27
Q

usually 1 in mature cysts
* large glycogen “inclusion mass”
* Chromatoid bodies (abundant and are pointed)

A

nucleus

Entamoeba polecki

27
Q

Nonpathogenic
*found in:
* mouth in soft tartar between teeth or in tonsillar crypts
* Occasionally in sputum

A

Entamoeba gingivalis

28
Q
  • only species to ingest white blood cells.
  • (fragments in large vacuole)
A

Entamoeba gingivalis

MUSCULAR (8 decks)

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