| Term: | blastomere actomyosin contractile ring |
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| Note: | This page represents a term created by the combination ("post-composition") of two ontology terms. For more information on the individual terms, click the hyperlinked name. |
| Name: | blastomere |
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| Synonyms: | blastomeres |
| Definition: | Cell that arises during cleavage and is partially cleaved, and located at the blastodisc margin prior to collectively forming the yolk syncytial layer (YSL) in the midblastula. |
| Ontology: | Anatomy Ontology [ZFA:0000093] |
| Name: | actomyosin contractile ring |
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| Synonyms: | actomyosin ring, CAR, constriction ring, contractile actomyosin ring, cytokinetic ring |
| Definition: | A cytoskeletal structure composed of actin filaments and myosin that forms beneath the plasma membrane of many cells, including animal cells and yeast cells, in a plane perpendicular to the axis of the spindle, i.e. the cell division plane. In animal cells, the contractile ring is located at the cleavage furrow. In budding fungal cells, e.g. mitotic S. cerevisiae cells, the contractile ring forms at the mother-bud neck before mitosis. |
| Ontology: | GO: Cellular Component [GO:0005826] QuickGO AmiGO |