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Flashcards in PARASITOLOGY Deck (156)
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1

Motile, reproducing stage, feeding stage of Protozoa

Trophozoite

2

Amebae has chromatoid bodies in the cyst stage

Entamoeba

3

Amebiasis is cause by

E. histolytica

4

Organs of the body that is most often involved in extraintestinal amebiasis

Liver

5

Characteristic of true amebae

Peripheral chromatin on the nuclear body
Chromatin bodies in the cyst
Include pathogens and non pathogens

6

True ameba

E. hartmanni

7

Ameba that inhabits the gastrointestinal tract of man are non motile, nonfeeding and infective during what stage ?

Cyst

8

Mature cyst of E. polecki have how many nuclei

1

9

Cyst with chromatoid bodies that have two pointed ends or that can be round triangular or oval

E. coli

10

Small delicate nuclear chromatin
FIne, even, peripheral chromatin
Progressive motility with hyaline, finger like pseudopods

Trophozoites of E. histolytica

11

Trophozoite when acting as a pathogen is likely to ingest RBC of the host

E. histolytica

12

Point of differentiation between E. histolytica and E. hartmanni

size

13

The mature cyst of E. histolytica has how many nuclei

Four

14

Failure to find bacteria in purulent spinal fluid should alert one to find the possibility of an infection with

Amebae

15

Trophozoite is distinguished by the possession of achromatic granules surrounding its karyosomal chromatin

I. butschlii

16

Double walled, wrinkled cyst form

A. castellani

17

A cyst that possesses a single nucleus and a large glycogen vacuole that stains deeply with iodine belong to

I. butschlii

18

Some ameba have spiny, hyaline extensions called

Acanthopods

19

Best staining procedures for species of Naegleria and Acanthamoeba

Hematoxylin and eosin
Wright stain

20

Ameba inhabiting the CNS enter the body through

Nasal mucosa

21

Specimen are Acanthamoeba and Naegleria usually found

Cerebrospinal fluid

22

Found in the brain
Trophozoite can assume a limax form
Trophozoite can become an ameba flagellate

Naegleria

23

Trophozoite whose karyosomal chromatin appears as a rosette of 4-6 granules

N. fowleri

24

Often mistaken for cyst of amebae

Blastocystis hominis

25

Intestinal flagellates are usuallly which shape in the trophozoite stage

Pear shaped

26

Pathognomonic for G. lamblia and the stage it is found in

Ventral sucking disk- trophozoite

27

Protozoa that has an undulating membrane

Trichomonas
Trypanosoma

28

Symptoms in Infection with D. fragilis

Diarrhea
Abdominal discomfort without diarrhea
Asymptomatic

29

Common in D. fragilis and T. vaginalis

Neither has a cyst form

30

Flagellate that can be pathogen of small intestine

Giardia