4.2 Other Flagellates Flashcards
three types of intestinal & urogenital flagellates
- trichomonas
- giardia
- chilomax
what is the most common protozoan intestinal disease
giardiasis - caused by giardia lamblia
habitat of giardia lamblia
duodenum and upper jejunum
infective stage of giardia lamblia
immature cyst
mature cyst
trophozoite
mature quadrinucleate cyst
the infective giardia lamblia cyst is
binucleated
quadrinucleated
quadrinucleated
pathogenic stage of giardia lambia
immature cyst
mature cyst
trophozoite
active trophozoite
diagnostic stage of giardia lamblia
immature cyst
mature cyst
trophozoite
mature cyst AND trophozoite in feces
mode of infection
contaminated food
giardia lambia trophozoite stage is shaped like
kite
leaf
pear
pear shaped - old man’s face
giardia lambia trophozoite has how many?
- flagella
- axostyle
- sucking disc
- nucleus
- basal bodies
- flagella (8)
- axostyle (2)
- sucking disc (2) - anterior/ventral
- nucleus (2)
- basal bodies (2)
what two structures are found in both giardia lamblia trophozoite and cyst
2 axostyles
2 parabasal bodies
giardia lamblia cyst has how many
- flagella
- axostyle
- sucking disc
- nucleus
- basal bodies
- flagella (0)
- axostyle (2)
- sucking disc (2) - anterior ventral
- nucleus (4)
- basal bodies (2)
how does giardia lamblia divide
binary fission
child shows signs of malnutrition. stool sample is negative to blood or necrotic tissue. history indicates nausea and diarrhea.
what is the infection?
giardia lamblia
what is the chronic pathology of giardia lamblia
covering of the epithelium by the trophozoite causing malabsorption of nutrients
child comes in with abdominal pain and distention. stool sample is negative to blood and positive to lipid. no fever
giardia lamblia
what is the differentiating feature between giardia lambia and trichomonas hominis
trichomonas hominis is an asymmetrical flagellate with an undulating membrane
what is the drug of choice for giardia lamblia for those older than 3 y/o
metronidazole
what is the drug of choice for giardia lamblia for those under 3 y/o
tinidazole
where are lumen dwelling flagellates found
lumen of alimentary canal
UGT
what are the types of trichomonas
t. hominis
t. vaginalis
t. tenax
all three trichomonas direct life cyle
true or false
true
characteristics of trichomonas
- 3 to 5 anterior flagella
- undulating membrane
- recurrently flagellum attached to the edge of the undulating membrane
how does trichomonas reproduce
longitudinal binary division
how do you differentiate t. hominis cyst from giardia lamblia cyst
you don’t; trichomonas have no cyst form
match trichomas to area of infection
t. hominis
t. tenax
t. vaginalis
human mouth
intestinal
genital organs
t. hominis (intestinal)
t. tenax (mouth)
t. vaginalis (genital organs)
where does trichomonas tenax live
in mouth and teeth pockets
gingivitis is caused by
t. tenax
infective stage of t. tenax
trophozoite stage
where does t. hominis live
intestine - caecum of human
quality of movement of t. hominis
jerky
twist and rotate
rotary
jerky
transmission of t. hominis
perhaps ingestion of flagella form
what causes trichomoniasis
t. hominis
t. tenax
t. vaginalis
t. vaginalis
quality of movement of t. vaginalis
jerky
twist and rotate
rotary
twist and rotate
doc for trichomoniasis
metronidazole
what is the common species of chilomastix
chilomastix mesnili
what is the habitat of chilomastix mesnili
caecal area
morphology of cholomastix mesnili
trophozoite pear shaped
4 flagella
cyst single nucleus
transmission of chilomastix mesnili
contaminated food and drink
quality of movement chilomastix mesnili
rotary
diagnostic stage of chilomastix mesnili
trophozoite and cyst
infective stage of chilomastix mesnili
cyst
