| Name: | presumptive atrium heart tube |
|---|---|
| Synonyms: | |
| Definition: | Multi-tissue structure that is part of the heart tube and will become the cardiac atrium. |
| Ontology: | Anatomy Ontology [ZFA:0001718] |
| Name: | anatomical region |
|---|---|
| Synonyms: | |
| Definition: | A 3D region in space without well-defined compartmental boundaries; for example, the dorsal region of an ectoderm. |
| Ontology: | Spatial Ontology [BSPO:0000070] |