| 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: | decreased thickness |
|---|---|
| Synonyms: | low thickness, slender, thin |
| Definition: | A thickness which is relatively low. |
| Ontology: | Phenotypic Quality Ontology [PATO:0000592] |