| Name: | fourth ventricle |
|---|---|
| Synonyms: | 4th ventricle, hindbrain ventricle, rhombencephalic ventricle, rhombencephalic vesicle, ventricle IV, ventriculus rhombencephali |
| Definition: | Fluid-filled brain cavity. Most posterior brain ventricle. |
| Ontology: | Anatomy Ontology [ZFA:0000110] |
| Name: | anatomical surface |
|---|---|
| Synonyms: | surface |
| Definition: | A 2D surface of an anatomical continuant. |
| Ontology: | Spatial Ontology [BSPO:0000005] |