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Parasitology- Flagellates
Flagellates and Ciliates
37
Medical
Undergraduate 4
03/13/2009

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Cards

Term
Diagnostic stage of flagellates and ciliates
Definition
Cysts or trophs in stool
Term
Infective stage of flagellates and ciliates (except Dientamoeba fragilis and Trichomonas species)
Definition
Cyst usually ingested in contaminated food or water.
Term
What is the most commonly diagnosed flagellate in the intestinal tract?
Definition
Giardia lamblia
Term
Pathogenic intestinal flagellates
Definition
Giardia lamblia, Dientamoeba fragilis
Term
Non-pathogenic intestinal flagellates
Definition
Chilomastix mesnili, Trichomonas hominis
Term
What is the only ciliate to parasitize humans?
Definition
Balantidium coli
Term
Which flagellate troph has erratic, "falling-leaf" motility?
Definition
Giardia lamblia
Term
How many pairs of flagella does Giardia lamblia troph have?
Definition
Four pairs- anterior, posterior, lateral and ventral
Term
How many nuclei are present in Giardia lamblia troph?
Definition
2
Term
Parabasal or median bodies
Definition
Two curved rods located posterior to sucking disc in Giardia lamblia troph
Term
Which flagellate cyst has 4 nuclei, 2 axonemes and 4 parabasal bodies?
Definition
Giardia lamblia cyst
Term
Symptoms of Giardia lamblia infection
Definition
weight loss, chronic diarrhea with increased fat and mucus secretion
Term
Which flagellate lacks flagella but is considered a flagellate due to other characteristics?
Definition
Dientamoeba fragilis
Term
What is the diagnostic and infective stage for Dientamoeba fragilis?
Definition
bi-nucleated trophs passed in stool.
Term
Three flagellates that have no cyst stage.
Definition
Dientamoeba fragilis, Trichomonas hominis, Trichomonas vaginalis
Term
Which flagellate infection is often associated with pinworm infections?
Definition
Dientamoeba fragilis
Term
Motility of Dientamoeba fragilis
Definition
May be progressive.
Term
Which troph has nuclear chromatin that is usually fragmented into 3-5 granules?
Definition
Dientamoeba fragilis
Term
Which flagellate is frequently misdiagnosed as a small Entamoeba hystolitica, E. hartmanni or Endolimax nana?
Definition
Dientamoeba fragilis
Term
Symptoms of Dientamoeba fragilis infection
Definition
mucus diarrhea, abdominal pain and tenderness, weight loss and fatigue
Term
Motility of Chilomastix mesnili
Definition
directional movement; 3 flagella located at anterior end
Term
What flagellate cyst is lemon-shaped?
Definition
Chilomastix mesnili
Term
Diagnostic and infective stage of Trichomonas hominis?
Definition
trophs in stool
Term
Motility of Trichomonas hominis troph
Definition
rapid, jerky and non-directional
Term
Which flagellate has an undulating membrane that extends the entire length of the body?
Definition
Trichomonas hominis
Term
Which flagellate is best identified in fresh saline preparations?
Definition
Trichomonas hominis
Term
Urogenital flagellate
Definition
Trichomonas vaginalis
Term
Which flagellate is sexually transmitted and feeds on bacteria and WBC's in vagina and prostate?
Definition
Trichomonas vaginalis
Term
Motility of Trichomonas vaginalis
Definition
jerky
Term
Which flagellate troph has an undulating membrane that stops halfway down the side of the body?
Definition
Trichomonas vaginalis
Term
In males, may have no symptoms or a persistant or recurring urethritis
Definition
Trichomonas vaginalis
Term
Flagellate that can cause respiratory disease in newborns
Definition
Trichomonas vaginalis
Term
What specimen is used to check for Trichomonas vaginalis?
Definition
Urine sediment, urethral discharge or seminal fluid
Term
Largest protozoan to parasitize humans
Definition
Balantidium coli
Term
Motility of Balantidium coli
Definition
Rotary movement; cilia propel organism forward via constant synchronized motion
Term
Which troph has a macronucleus and a micronucleus?
Definition
Balantidium coli
Term
hyaluronidase
Definition
enzyme produced by Balantidium coli that facilitates tissue invasion
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