| 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: | Merkel cell |
|---|---|
| Synonyms: | Merkel cells |
| Definition: | A modified epidermal cell located in the stratum basale. They are found mostly in areas where sensory perception is acute. Merkel cells are closely associated with an expanded terminal bulb of an afferent myelinated nerve fiber. |
| Ontology: | Anatomy Ontology [ZFA:0009146] |