| Name: | brain | 
|---|---|
| Synonyms: | brain structure | 
| Definition: | Cavitated compound organ which is comprised of gray and white matter and surrounds the cerebral ventricular system. | 
| Ontology: | Anatomy Ontology [ZFA:0000008] | 
| Name: | anatomical surface | 
|---|---|
| Synonyms: | surface | 
| Definition: | A 2D surface of an anatomical continuant. | 
| Ontology: | Spatial Ontology [BSPO:0000005] |