Parasitology Flashcards
Vegetative, motile, active reproduction, feeding, less resistant
Non-infective when ingested since it will die due to stomach acid
Trophozoite
Non-motile, resistant due to hyaline wall
-Resistant to acid
Cyst
All amoeba are intestinal except
E. gingivalis
Charcot Leyden crystals are associated with what parasite?
e. histolytica
true or false
Both cyst and trophozoite are used for diagnostic stage in E. histolytica
True
The only pathogenic parasite among amoeba
E. histolytica
Karyosome appearance of Entamoeba coli cyst
eccentric chromosome
Nuclear membrane appearance of Entamoeba coli cyst
thin or thick
thick
Chromatoidal body appearance of Entamoeba coli cyst
whisk broom, splintered glass
number of nuclei for Entamoeba coli cyst
Nuclei = 1-8
Pseudopod appearance of Entamoeba coli cyst
round, blunted
also known as crossed eyed cyst
Endolimax nana
Karyosome appearance of Endolimax nana
Blot-like karyosome
Smallest protozoan
Endolimax nana
amoeba that causes Pyorrhea alveolaris
Entamoeba gingivalis
amoeba that Resembles bull’s eye
Iodamoeba butchlii cyst
Trophozoite has spiny hyaline extensions
Acanthamobea spp
Acanthamobea spp Infective stage is?
trophozoite
? stools are best for detecting amoeba and flagellate trophozoites
Liquid
What are the ameobas without cyst? = NoTED
Trichomonas
E. gingivalis
D. fragilis
Sexually transmitted amoebas
2TEG or GETT
® T. vaginalis
® T. cruzi
® E. histolytica
® G. lamblia (male to male)
What is the appearance of amebic liver abscess due to E. histolytica
Anchovy sauce
What are the entry points of Acanthamoeba
- BEN
Broken skin/ulcerated skin
Eyes
Nasal
has the Motility : falling leaf
Gardia lamblia
trophozoite appearance Old man with eyeglasses, pear shaped, teardrop
(anterior: Rounded ; posterior: Pointed)
Gardia lamblia
number or nuclei and flagella of Gardia lamblia
Nuclei: 2
Flagella : 8
causes (traveller’s diarrhea)
Gardia lamblia
Dx stage of Gardia lamblia
Trophozoite and cyst
specimen of choice for Gardia lamblia
Duodenal fluid aspirate
cyst appearance is pear or lemon shaped
* conical anterior with knob- like protuberance - nipple
shape
Chilomastrix meslini
parasite associated with Pingpong Disease
Trichomonas vaginalis
Trichomonas vaginalis motility
rapid jerky motility
Brain-eating amoeba
Naegleria fowleri
Infective and Diagnostic stage of Naegleria fowleri
Trophozoite
The ONLY ciliated medically significant protozoan.
Balantidium coli
THROWN BALL or BORING motilit
Balantidium coli
Which parasite causes strawberry cervic
Trichomonas vaginalis
Which sample is preferred for T. tenax
Mouth scrapings
Which sample is preferred for T. tenax
Feces
What is the characteristics of vaginal discharge if a person is infected
with T. vaginalis?
Yellow-green frothy discharge with foul odor
Which parasite is pear-shaped with twisted posterior end
Chilomastrix meslini
What is the characteristic shape of C. meslini?
Shepherd’s crook
Which amoeba has a large glycogen vacuole
Iodameoba butchlii
Morphological Stages of Flagellates
Ovoid (with nucleus and kinetoblast)
* NO flagella (non-motile)
* NO undulating membrane
AMASTIGOTE
Morphological Stages of Flagellates
* Elongated
* Spindle
* WITH flagella
* NO undulating membrane
* Kinetoplast anterior to nucleus
PROMASTIGOTE
Flagella
* Almost posterior
* WITH undulating membrane
* Kinetoplast anterior to nucleus
EPIMASTIGOTE
- Kinetoplast POSTERIOR to nucleus
- 12 to 35 um long
- 2 to 4 um wide
- Often assume the shape of letters C, S, or U
in stained blood films - FULL BODY LENGTH undulating membrane
TRYPOMASTIGOTE
American trypanosomiasis or Chagas’ disease
Trypanosoma cruzi
Treatment For T. cruzi
Nifurtimox (Lampit)
the most common initial symptom for T. cruzi
Chagoma
Winterbottom sign is seen on
T. brucei rhodesiense
True or false
Presence of IgG in the CSF is diagnostic for T. b.
rhodesiense
False, should be IgM
Tsetse fly
T. gambiense and T. b. rhodesiense
Enlargement of visceral organs
T. cruzi
What appearance is created by Babesia inside the RBC in which there
are 4 trophozoites that are connected by their chromatin?
Maltese cross appearance
Mature oocyst with sausage shaped
sporozoites
Isospora belli
it is identified using Gomori Methenamine Silver stain
Pneumocystis jirovecii
Toxoplasma gondii Infective Stage from man to man
tachyzoites and bradyzoites
Ixodes dammini
Babesia microti
Ixodes ricinus
B. divergens
Babesia Infective stage:
Sporozoites
Babesia Diagnostic Stage:
Trophozoite
Prodrome-like symptoms is seen in
Babesia
- Young RBCs
- Enlarged, distorted with ragged cell walls
- Infection for 1 yr
P. ovale
True or false
P. falciparum and P. malariae have the ability to hide behind the
endothelial cells, thus not recognized by WBCs
true
Both young and old RBCs infected
P. falciparum
– Maurer’s dot
P. falciparum
Ziemann’s dot
P. malariae
active chromatin replication is seen
Immature schizonts
taken by the
mosquito/infects the mosquito
Gametocyte
infects man
Sporozoite
Black water
Plasmodium falciparu
Also known as Dum Dum fever or Kala-azar with
hepatosplenomegal
Leishmania donovani comple
Sandfly carries Promastigote
True or False
True
Promastigotes are phagocytized by monocytes, at kayang mabuhay sa loob
ng phagocytes MEANS they are extracellular
True or False
False, should be intracellular
EAST African Sleeping sickness, Rhodesian trypanosomiasis
Trypanosoma brucei rhodesiense
Romana sign
T. cruzi
parasite associated with the ff.
Kerandel’s sign
Winterbottom’s sign
somnolence
T. brucei gambiense
Trypanosoma cruzi MOT
Reduviid bug
Blood transfusion
SexTransplacenta