Flagellates

Question 1

locomotory organelle

Answer 1

Flagella

Question 2

only flagellates that both have cyst and troph stage

Answer 2

Giardia lamblia and Chilomastix mesnili

Question 3

Pathogenic flagellates

Answer 3

Giardia lamblia and Chilomastix mesnili

Question 4

Giardia lamblia other names

Answer 4

Giardia duodenalis,

Lamblia intestinalis

Question 5

G. lamblia disease association

Answer 5

gay-bowel syndrome
Giardiasis,
lambliasis,
traveller’s diarrhea

Question 6

Intestinal flagellate that colonizes and reproduce

in the small intestine

Answer 6

G. lamblia

Question 7

The only intestinal protozoal flagellate that is

considered pathogenic

Answer 7

G. lamblia

Question 8

G. lamblia causes ____ in duodenum and subsequently causes diarrhea

Answer 8

crypts

Question 9

MOT of Giardiasis

Answer 9

ingestion of infective cyst
Person-to-person
Water-borne
Food-borne epidemics (food-handlers)

Question 10

risk factors of infection of Giardiasis

Answer 10

Diaper changing and inadequate hand washing

Question 11

G. lamblia cyst

Answer 11

smooth and colorless, thick and

refractile wall.

Question 12

permanently stained G. lamblia cyst appear

Answer 12

, four prominent nuclei and four

median bodies are observed.

Question 13

each cyst gives rise to ____ trophs

Answer 13

two

Question 14

G. lamblia cyst morphology

Answer 14

-oval shape
-8–14 μm by 7–10 μm
-distinct cell wall set apart from cytoplasm
-4 nuclei at anterior end
large karyosome, no peripheral chromatin
-fibrils (axonemes) evident
-median bodies

Question 15

G. lamblia troph morphology

Answer 15

s bilaterally symmetrical and 
dorsoventrally
flattened.
large sucking disk
pear shape
• 12-15 x 5-10 x 2-4 m
• 2 nuclei
• large karyosome, no peripheral chromatin
• fibrils (axonemes) evident
• bilateral symmetry
• pair of median bodies
• adhesive disk (not always evident)
• 4 pair flagella

Question 16

G. lamblia troph number of flagella

Answer 16

4 pairs

Question 17

essential for virulence of G. lamblia

Answer 17

motility from the 4 pairs of flagella

Question 18

G. lamblia motility

Answer 18

FALLING LEAF MOTILITY

Question 19

Suspicion of Giardia infection

Answer 19

: acute or chronic symptoms

Question 20

confirmatory of Giardia infection

Answer 20

: detection of parasite in feces or duodenal

aspirate or biopsy

Question 21

parasite detection in stools

Answer 21

Steatorrhea
3 non-consecutive days
wet mounts or stained
IFA, copro-antigens

Question 22

Aspirate or biopsy

Answer 22

Enterotest (or string test)

• Duodenal aspirate

Question 23

Test used if other methods have failed to detect giardiasis

Answer 23

String test or Enterotest

Question 24

what is collected in Enterotest

Answer 24

duodenal material

Question 25

how long is the string left in place for the Enterotest

Answer 25

4 - 6 hours (overnight)