F, Lec (Commensal Amebae) Flashcards
(31 cards)
Amoebas that do not cause harm to the host
Commensal
Three genera of intestinal amebae
- genus entamoeba
- genus endolimax
- genus iodamoeba
Has a small karyosome found near the center of the nucleus
Genus entamoeba
Large and irregularly shaped
Genus endolimax
Large chromatin rich karyosome
Genus iodamoeba
Has bulls eye karyosome
Entamoeba histolytica
Larger than endolimax
Iodamoeba butschlii
Does not have cysts
Entamoeba ginggivalis
Where does excystation happen
Lower small intestine
Reproduction of troph
Binary fission
T or F: amebae does not cause disease
True
Is morphologically similar to E. histolytica but has different DNA, RNA, and isoenzyme pattern
Entamoeba dispar
Similar to E. histolytica but is smaller, does not ingest RBC, and sluggish
Entamoeba hartmanni
Broad and blunt pseudopodia, sluggish unidrectional movement, thick and irregular peripheral chromatin with large eccentric karyosome
Entamoeba coli
Number of nuclei Entamoeba coli has
8
Chromatoidal body of Entamoeba coli
Splinter like
Parasite of pigs and monkeys
Entamoeba polecki
Differs entamoebe polecki from histolytica
Cyst is uninucleated
Found in the mouth
Entamoeba gungivalis
Moves quickly w/ multiple blunt pseudopodia
Entamoeba gingivalis
T or F: Entamoeba gingivalis has no cyst stage
True
Small, large irregular karyosome, quadrinucleate when mature
Endolimax nana
Large vesicular nucleus, no peripheral chromatin granules, uninucleated cyst, w/ large glycogen body
Iodamoeba butschlii
T or F: commensal amebae needs treatment
False
