| 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: | cell population proliferation |
|---|---|
| Synonyms: | cell proliferation |
| Definition: | The multiplication or reproduction of cells, resulting in the expansion of a cell population. |
| Ontology: | GO: Biological Process [GO:0008283] QuickGO AmiGO |