Flagella and ciliated, with Quiz 2

What is the method of infection for giardia

ingestion of cysts

What parasite is known for its falling leaf motility

Giardia lamblia

Giardia troph

Giardia troph

Giardia cyst

Giardia cyst

What are other methods of diagnosing giardia

• DFA

• EIA

What parasite has a pear shaped troph

Chilomastix mesnili

Chilomastix mesnili

What parasite has a lemon shaped cyst

Chilomastix mesnili

Chilomastix mesnili

Chilomastix mesnili

Trichomonas vaginalis

Trichomonas vaginalis

What is key when studying or collecting a vaginal swab for trich

avoid stool contamination

What is the only parasite that is ciliated

Balantidium coli

What is the method of infection for trich.

sexual intercourse

What is the method of infection for B. coli

ingestion of cysts

What is the kidney bean shaped nucleus called

macronucleus

Balantidium coli troph

What parasite has a cytosomal groove

B. coli

B. coli troph

B. coli cyst

B. coli cyst

B. coli cyst

What are the stages shown in the image of B. coli?

1=Trophozoite; 2=immature cyst; 3=infective cyst

Giardiasis is routinely diagnoed via

• stool exam

• EIA

• recovery of cysts in duodenal aspirates

Hogs are an important reservoir for human infection for which large protozoan?

B. coil

Giardia cysts are infective for humans…

as soon as they are passed in the stool

An outbreak of diarrhea characterized by extreme flatulence and by excessive mucus and fat in the stools is reported from a day care center. Which parasite would you suspect?

Giardia lamblia

Name two coccidia cause disease in the immunosuppressed, but few problems in healthy individuals

• cryptosporidium

• microsporidia

• cyclospora

• Isospera

• toxoplama

An acid fast, round cyst measuring 4-5 um

cryptosporidium

a 15 um pear shaped troph with 8 flagella, central axonemes, and two bilateral anterior nuclei contianing large endosomes

Giardia lamblia

A 50 um cyst containing a ciliated organism with large visible kidney-shaped nucleus.

B. coli

A 30um spindle shaped transparent cyst containing one or two sporoblasts

Isopera

A lemon shaped cyst containing a single large nucleus with a large karyosome

Chilomastix

An ameboid troph with 2 nuclei

dientomeba

What organisms is likely to be missed on examination of a fecal concentrated specimen

Dientamoeba fragilis

T/F, Isospera, cryptosporidium, and cyclospora can be diagnosed using a trichrome stain

F

T/F cyclospora and crytosporidium can be easily confused because they are both acid fast speres measuring 9-10um

F

T/F, Entamoeba hartmanni is considered pathogenic

F

T/F An entamoeba troph with ingested RBC is most likely E.coli

F

T/F, Cryptosporidium can infect other body sites besides the intestine

T