9 Questions
SHAPE: ROUND TO SPHERICAL NUCLEI: 1-8 KARYOSOME: large, irregular, and eccentric PERIPHERAL CHROMATIN: unevenly distributed CYTOPLASM: coarse and granulated CYTOPLASMIC INCLUSIONS *OTHER INFOS: THIN CHROMATOID BARS WITH POINTED SPLINTERED ENDS
Entamoeba COLI
SHAPE: SPHERICAL NUCLEI: 1-4 KARYOSOME: small and central PERIPHERAL CHROMATIN: fine and evenly distributed CYTOPLASM: finely granulate CYTOPLASMIC INCLUSIONS *OTHER INFOS: chromatoid bars, rounded ends in young cysts
Entamoeba HARTMANNI
SHAPE: SPHERICAL/ OVOID ELLIPSOID NUCLEI: 1-4 USUALLY 4 KARYOSOME: large, irregular, and blotlike PERIPHERAL CHROMATIN: absent CYTOPLASM: granular and vacuolated CYTOPLASMIC INCLUSIONS *OTHER INFOS: nondescript small mass
ENDOLIMAX NANA
SHAPE: SPHERICAL OR OVAL NUCLEI: 1 KARYOSOME: small and central PERIPHERAL CHROMATIN: fine and evenly distributed CYTOPLASM: granular and vacuolated CYTOPLASMIC INCLUSIONS *OTHER INFOS: angular chromatoid bards or pointed ends in young cysts
Entamoeba POLECKI
SHAPE: SPHERICAL TO ROUND NUCLEI: 1-4 KARYOSOME: small and central PERIPHERAL CHROMATIN: fine and evenly distributed CYTOPLASM: finely granulate CYTOPLASMIC INCLUSIONS *OTHER INFOS: chromatoid bars, rounded ends in young cysts
Entamoeba HISTOLYTICA
SHAPE: ROUND AND THICK CELL WALLS NUCLEI: 1 KARYOSOME: large and usually centrally located PERIPHERAL CHROMATIN: absent CYTOPLASM: granular and usually vacuolated CYTOPLASMIC INCLUSIONS *OTHER INFOS: often contains vacuoles
NAEGLERIA FOWLERI
SHAPE: x NUCLEI: x KARYOSOME: x PERIPHERAL CHROMATIN: x CYTOPLASM: x CYTOPLASMIC INCLUSIONS *OTHER INFOS: no one cyst form of the parasite
Entamoeba GINGIVALIS
SHAPE: ROUNDISH WITH RAGGED EDGES NUCLEI: 1 KARYOSOME: large PERIPHERAL CHROMATIN: granular and vacuolated CYTOPLASM: granular and usually vacuolated CYTOPLASMIC INCLUSIONS *OTHER INFOS: double cell wall
ACANTHAMOEBA SPP
SHAPE: OVOID, ELLIPSOID, TRIANGULAR, OTHERS NUCLEI: 1 KARYOSOME: large, usually central refractive acromatic granules may/not be present PERIPHERAL CHROMATIN: absent CYTOPLASM: coarsely granular and vacuolated CYTOPLASMIC INCLUSIONS *OTHER INFOS: well defined glycogen mass
IODAMOEBA BUSTCHLII
Study Notes
Shape and Nuclei
- Round to spherical shape with 1-8 nuclei
- Spherical shape with 1-4 nuclei, small and central karyosome
- Spherical/ovoid ellipsoid shape with 1-4 nuclei, usually 4, large and irregular karyosome
- Spherical or oval shape with 1 nucleus, small and central karyosome
- Spherical to round shape with 1-4 nuclei, small and central karyosome
- Round and thick cell walls with 1 nucleus, large and centrally located karyosome
- x shape with x nuclei, no specific karyosome description
- Roundish with ragged edges shape with 1 nucleus, large karyosome
- Ovoid, ellipsoid, triangular, and other shapes with 1 nucleus, large and usually central karyosome
Karyosome
- Large, irregular, and eccentric karyosome
- Small and central karyosome
- Large, irregular, and blotlike karyosome
- Small and central karyosome
- Large and usually centrally located karyosome
- No specific karyosome description
- Large karyosome
- Large, usually central refractive acromatic granules may or may not be present
Peripheral Chromatin
- Unevenly distributed peripheral chromatin
- Fine and evenly distributed peripheral chromatin
- Absent peripheral chromatin
- Fine and evenly distributed peripheral chromatin
- Absent peripheral chromatin
- Granular and vacuolated peripheral chromatin
- Absent peripheral chromatin
Cytoplasm
- Coarse and granulated cytoplasm
- Finely granulated cytoplasm
- Granular and vacuolated cytoplasm
- Granular and usually vacuolated cytoplasm
- Finely granulated cytoplasm
- Granular and usually vacuolated cytoplasm
- Coarsely granular and vacuolated cytoplasm
Cytoplasmic Inclusions
- Thin chromatoid bars with pointed splintered ends
- Chromatoid bars with rounded ends in young cysts
- Nondescript small mass
- Angular chromatoid bars or pointed ends in young cysts
- Chromatoid bars, rounded ends in young cysts
- Often contains vacuoles
- No specific cytoplasmic inclusions
- Double cell wall
- Well-defined glycogen mass
Identify the characteristics of cysts, including their shape, nuclei, karyosome, peripheral chromatin, and cytoplasm. Learn about the features of cysts and their variations. Test your knowledge of cyst morphology.
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