| Name: | atrium |
|---|---|
| Synonyms: | |
| Definition: | Cavitated compound organ that receives inflow of deoxygenated blood and delivers it to a muscular cardiac ventricle. Valves are present to direct flow. There are only two chambers present in the fish heart. |
| Ontology: | Anatomy Ontology [ZFA:0000471] |
| Name: | hyperplastic |
|---|---|
| Synonyms: | hyperplasia, overdeveloped |
| Definition: | A physical quality inhering in an organ or tissue by virtue of the bearer's exhibiting an increased number of cells, typically associated with an increase in size. |
| Ontology: | Phenotypic Quality Ontology [PATO:0000644] |