| Name: | midbrain | 
|---|---|
| Synonyms: | mesencephalon | 
| Definition: | The brain region between the forebrain anteriorly and the hindbrain posteriorly, including the tectum dorsally and the midbrain tegmentum ventrally. | 
| Ontology: | Anatomy Ontology [ZFA:0000128] | 
| Name: | ventral region | 
|---|---|
| Synonyms: | |
| Definition: | Anatomical region ventrally located on the body or body part. | 
| Ontology: | Spatial Ontology [BSPO:0000084] |