| 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: | distended |
|---|---|
| Synonyms: | expanded |
| Definition: | A size quality inhering in a bearer by virtue of the bearer's being abnormally expanded or increased in size. |
| Ontology: | Phenotypic Quality Ontology [PATO:0001602] |