Questions and Answers
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
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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
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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
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SHAPE: x NUCLEI: x KARYOSOME: x PERIPHERAL CHROMATIN: x CYTOPLASM: x CYTOPLASMIC INCLUSIONS *OTHER INFOS: no one cyst form of the parasite
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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
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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
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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
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Description
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.
