Flagella laboratory Flashcards
Description for G. lamblia troph
- Rounded anteriorly and tapering at the posterior end (pearshaped)
- Bilaterally symmetrical
-resembles old man’s eyeglass - with sucking disc
How many pairs of flagella have?
4 pairs (8 flagella)
motility of g. lamblia troph
falling leaf motiin
g. lamblia no. of nuclei troph
binucleated (2) central
descrip of g. lamblia cyst
oval, double walled organism
g lamblia cyst no. of nuclei?
2-4 nuclei
Diagnosis of giardia lamblia
Stool examination
Chilomastix mesnili trophozoite description:
- Asymmetrically pearshaped
- w/ very prominent spiral groove( mouth part)
-w/cytosome (not visible unless OIO)
chilomastix mesnili: how many flagella?
3
motility of chilomastix mesnili?
corkscrew movement
No. of nuclei of chilomastix mesnili
mononucleated (1)
chilomastix mesnili cyst descript.
- Lemon shaped cyst
- With nipple-like projection
No. of nuclei in d. fragilis?
binucleated (2) with fragmented karyosome (granules)
locomotory organelle for d. fragilis troph?
blunt pseudopodia
motility of d. fragilis?
sluggish, nondirectional
motility of d. fragilis?
sluggish, nondirectional
Infective stage of d. fragilis?
Trophozoite stage, no cyst stage
Trichonomas sp. how many flagella?
3-5 flagella
description of trichonmas species
- Only in trophozoite stage
- Have rounded anterior end and somewhat pointed posterior end
- w/ 3 – 5 flagella anteriorly
- Curved, rigid axostyle arise near the median anterior pole extending through the entire body
- Small cytosome on one side of the anterior end is observed
- with blepharoplast between the nucleus and the anterior margin –à arises 3-5 flagella and a marginal flagellum on an undulating membrane, the base attachment being a heavy costa
T. hominis
Habitat: Intestine Size: Medium Pathogenicity: commensal Specimen for diagnosis: stool T. tenax
T. tenax
Habitat: oral cavity
Size: small
Pathogenicity: commensal Specimen for diagnosis: oral scrappings
T. Vaginalis
Habitat: genitalia
Size: large
Pathogenicity: may cause UTI
Specimen for diagnosis: urine, semen, genital secretions
measurement of t. vaginalis
15-20 micron (biggest)
description of t. vaginalis
- Pyriform in shape with cytosome
- Prominent axostyle
Undulating membrane with a marginal flagellum
