4.2 Other Flagellates Flashcards

1
Q

three types of intestinal & urogenital flagellates

A
  • trichomonas
  • giardia
  • chilomax
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2
Q

what is the most common protozoan intestinal disease

A

giardiasis - caused by giardia lamblia

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3
Q

habitat of giardia lamblia

A

duodenum and upper jejunum

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4
Q

infective stage of giardia lamblia

immature cyst
mature cyst
trophozoite

A

mature quadrinucleate cyst

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5
Q

the infective giardia lamblia cyst is

binucleated
quadrinucleated

A

quadrinucleated

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6
Q

pathogenic stage of giardia lambia

immature cyst
mature cyst
trophozoite

A

active trophozoite

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7
Q

diagnostic stage of giardia lamblia

immature cyst
mature cyst
trophozoite

A

mature cyst AND trophozoite in feces

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8
Q

mode of infection

A

contaminated food

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9
Q

giardia lambia trophozoite stage is shaped like

kite
leaf
pear

A

pear shaped - old man’s face

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10
Q

giardia lambia trophozoite has how many?

  • flagella
  • axostyle
  • sucking disc
  • nucleus
  • basal bodies
A
  • flagella (8)
  • axostyle (2)
  • sucking disc (2) - anterior/ventral
  • nucleus (2)
  • basal bodies (2)
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11
Q

what two structures are found in both giardia lamblia trophozoite and cyst

A

2 axostyles

2 parabasal bodies

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12
Q

giardia lamblia cyst has how many

  • flagella
  • axostyle
  • sucking disc
  • nucleus
  • basal bodies
A
  • flagella (0)
  • axostyle (2)
  • sucking disc (2) - anterior ventral
  • nucleus (4)
  • basal bodies (2)
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13
Q

how does giardia lamblia divide

A

binary fission

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14
Q

child shows signs of malnutrition. stool sample is negative to blood or necrotic tissue. history indicates nausea and diarrhea.

what is the infection?

A

giardia lamblia

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15
Q

what is the chronic pathology of giardia lamblia

A

covering of the epithelium by the trophozoite causing malabsorption of nutrients

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16
Q

child comes in with abdominal pain and distention. stool sample is negative to blood and positive to lipid. no fever

A

giardia lamblia

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17
Q

what is the differentiating feature between giardia lambia and trichomonas hominis

A

trichomonas hominis is an asymmetrical flagellate with an undulating membrane

18
Q

what is the drug of choice for giardia lamblia for those older than 3 y/o

A

metronidazole

19
Q

what is the drug of choice for giardia lamblia for those under 3 y/o

A

tinidazole

20
Q

where are lumen dwelling flagellates found

A

lumen of alimentary canal

UGT

21
Q

what are the types of trichomonas

A

t. hominis
t. vaginalis
t. tenax

22
Q

all three trichomonas direct life cyle

true or false

A

true

23
Q

characteristics of trichomonas

A
  • 3 to 5 anterior flagella
  • undulating membrane
  • recurrently flagellum attached to the edge of the undulating membrane
24
Q

how does trichomonas reproduce

A

longitudinal binary division

25
Q

how do you differentiate t. hominis cyst from giardia lamblia cyst

A

you don’t; trichomonas have no cyst form

26
Q

match trichomas to area of infection

t. hominis
t. tenax
t. vaginalis

human mouth
intestinal
genital organs

A

t. hominis (intestinal)
t. tenax (mouth)
t. vaginalis (genital organs)

27
Q

where does trichomonas tenax live

A

in mouth and teeth pockets

28
Q

gingivitis is caused by

A

t. tenax

29
Q

infective stage of t. tenax

A

trophozoite stage

30
Q

where does t. hominis live

A

intestine - caecum of human

31
Q

quality of movement of t. hominis

jerky
twist and rotate
rotary

A

jerky

32
Q

transmission of t. hominis

A

perhaps ingestion of flagella form

33
Q

what causes trichomoniasis

t. hominis
t. tenax
t. vaginalis

A

t. vaginalis

34
Q

quality of movement of t. vaginalis

jerky
twist and rotate
rotary

A

twist and rotate

35
Q

doc for trichomoniasis

A

metronidazole

36
Q

what is the common species of chilomastix

A

chilomastix mesnili

37
Q

what is the habitat of chilomastix mesnili

A

caecal area

38
Q

morphology of cholomastix mesnili

A

trophozoite pear shaped
4 flagella
cyst single nucleus

39
Q

transmission of chilomastix mesnili

A

contaminated food and drink

40
Q

quality of movement chilomastix mesnili

A

rotary

41
Q

diagnostic stage of chilomastix mesnili

A

trophozoite and cyst

42
Q

infective stage of chilomastix mesnili

A

cyst