| Name: | opercular flap |
|---|---|
| Synonyms: | gill cover, gill slit, opercular apparatus, opercular cover, operculum |
| Definition: | A large flap, covered by integument, supported by several flat bones, actuated by muscles, found on the side of the head covering the gill chambers. |
| Ontology: | Anatomy Ontology [ZFA:0000555] |
| Name: | anatomical region |
|---|---|
| Synonyms: | |
| Definition: | A 3D region in space without well-defined compartmental boundaries; for example, the dorsal region of an ectoderm. |
| Ontology: | Spatial Ontology [BSPO:0000070] |