Parasitology: Flagellates And Ciliates

Front 1

Finding any intestinal flagella is indicative of ____________

Back 1

ingestion of contaminated food/water

Front 2

Intestinal flagellates (4)

Back 2

Giardia lamblia
Dientamoeba fragilis
Trichomonas hominis
Chilomastix mesnili

Front 3

Vaginal/Urogenital flagellates (1)

Back 3

Trichomonas vaginalis

Front 4

Which 3 flagellates are considered pathogenic?

Back 4

Giardia lamblia
Dientamoeba fragilis
Trichomonas vaginalis

Front 5

The most common intestinal parasite in the United States is _____________

Back 5

Giardia lamblia

Front 6

Giardia lamblia may be seen in which form(s)?

Back 6

Trophozoite and cyst

Front 7

Giardia lamblia infection is diagnosed via ____________

Back 7

OCP test, Enterotest or ELISA method

Front 8

The ELISA method detects Giardia lamblia _______

Back 8

antigen

Front 9

Giardia lamblia causes _____________

Back 9

"Traveler's diarrhea"

Front 10

____________________ are at a greater risk of infection of Giardia lamblia

Back 10

day care centers

Front 11

Giardia lamblia: prevention methods

Back 11

handwashing/ appropriate diaper practices

Front 12

Characteristics of Giardia lamblia trophozoite

Back 12

motile stage/ tear drop (pear) shaped/ bilateral symmetry/ 2 nuclei/ 1 pair parabasal bodies/ 4 pairs flagella

Front 13

Giardia lamblia trophozoite- appearance of motility

Back 13

falling leaf on a wet prep

Front 14

Giardia lamblia- infective stage

Back 14

cyst

Front 15

Giardia lamblia cyst- size

Back 15

oval, 8-12µm

Front 16

Giardia lamblia cysts can remain viable for up to ________ months

Back 16

3 months

Front 17

Giardia lamblia characteristics

Back 17

2-4 nuclei at one end/ central axostyle/ parabasal bodies

Front 18

Cyst stage of Giardia lamblia is found in ___________

Back 18

hard stool

Front 19

Troph stage of Giardia lamblia is found in __________

Back 19

soft or fluid feces

Front 20

The ___________________ occurs in the small intestine during G. lamblia infections

Back 20

excystation process

Front 21

(G. lamblia) trophozoites form and move to the large intestine. While here, ____________ occurs

Back 21

multiplication

Front 22

Chilomastix mesnili trophozoite is ________ shaped

Back 22

teardrop

Front 23

Chilomastix mesnili trophozoite appearance

Back 23

single, large nucleus anterior end, small/eccentric karyosome; 3 anterior flagella; cytostome

Front 24

Chilomastix mesnili has _________ motility

Back 24

rotary

Front 25

A cytostome is a _______________

Back 25

primitive mouth

Front 26

C. mesnili cyst is ___________ shaped

Back 26

lemon

Front 27

C. mesnili cyst: appearance

Back 27

1 nucleus; cytostome

Front 28

C. mesnili has a ______________ on one end

Back 28

clear hyaline knob

Front 29

Trichomonas hominis is found only in ________ form

Back 29

trophozoite

Front 30

T. hominis- shape

Back 30

tear drop

Front 31

T. hominis movement is __________

Back 31

jerky

Front 32

T. hominis: appearance

Back 32

3-5 anterior flagella; one nucleus with small, central karyosome

Front 33

T. hominis has a ______ undulating membrane

Back 33

full

Front 34

Trichomonas vaginalis is found only in ______ form

Back 34

trophozoite

Front 35

T. vaginalis is transmitted ___________

Back 35

sexually

Front 36

T. vaginalis is seen in _____________ (4 places)

Back 36

urine, vaginal discharge, urethral discharge, and prostatic secretion

Front 37

If T. vaginalis is found in feces, it is __________

Back 37

contaminate

Front 38

T. vaginalis has a __________ undulating membrane

Back 38

short

Front 39

T. vaginalis has _____ flagella

Back 39

4-6 flagella

Front 40

T. vaginalis has ________ movement

Back 40

jerky, nondirectional

Front 41

Dientamoba fragilis is found in ________ stage only.

Back 41

trophozoite

Front 42

D. fragilis: appearance

Back 42

2 nuclei, karyosome composed of granules

Front 43

D. fragilis has a ____________ appearance

Back 43

shattered

Front 44

D. fragilis flagella can only be seen with _____________

Back 44

electron microscopy

Front 45

The cytoplasm of D. fragilis has _______________

Back 45

vacuoles with ingested bacteria

Front 46

D. fragilis causes ____________

Back 46

diarrhea, abdominal pain, and severe puritis (itching)

Front 47

D. fragilis has unknown transmission, but is known to be carried in the ___________

Back 47

pinworm

Front 48

Ciliates use ________ for movement

Back 48

cilia

Front 49

Only one genus of ciliate infects humans. It is ______

Back 49

Balantidium coli

Front 50

B. coli is the ______________

Back 50

largest parasitic protozoan

Front 51

Life cycle of B. coli is the same as __________ and __________

Back 51

flagellates and amoebas

Front 52

B. coli is transmitted by _______________ and __________

Back 52

ingesting contaminated food/water and person-to-person

Front 53

B. coli trophozoite measures

Back 53

50-100µm long by 25-120µm wide

Front 54

B. coli trophozoite has __________ that surround the cell wall

Back 54

rows of cilia

Front 55

B. coli trophozoite has ___________ motility

Back 55

rotary, boring

Front 56

B. coli trophozoite contains a macronucleus and a ____________

Back 56

micronucleus

Front 57

B. coli trophozoite's cytoplasm has ____________ and a _______________

Back 57

food vacuoles and a distinct anterior cytostome

Front 58

B. coli cyst measures

Back 58

50-70µm in diameter

Front 59

B. coli cyst contains a _________ and a micronucleus

Back 59

macronucleus

Front 60

B. coli cyst has cilia that is retracted within ___________________

Back 60

double protective cyst wall