| 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: | posterior margin |
|---|---|
| Synonyms: | |
| Definition: | Anatomical margin that is located on the posterior side of the body or body part. |
| Ontology: | Spatial Ontology [BSPO:0000672] |