| 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: | separated from |
|---|---|
| Synonyms: | discontiguous, divided_from, splitted from |
| Definition: | A structural quality inhering in a bearer by virtue of the bearer's not being in contact with another entity, or of no longer being connected or joined with another entity. |
| Ontology: | Phenotypic Quality Ontology [PATO:0001505] |
| Name: | sinus venosus |
|---|---|
| Synonyms: | inflow tract |
| Definition: | Heart region collecting blood from the paired common cardinal veins and delivering to the atrium. One of four components of the heart. The sinus venosus also acts as a pacemaker and is the first to contract. |
| Ontology: | Anatomy Ontology [ZFA:0000154] |