| Name: | axis |
|---|---|
| Synonyms: | midline |
| Definition: | Organism subdivision running along the rostral-caudal axis of the early embryo. |
| Ontology: | Anatomy Ontology [ZFA:0000092] |
| Name: | ventral side |
|---|---|
| Synonyms: | ventral |
| Definition: | An anatomical region that is the entire part of an anatomical structure ventral to a horizontal plane and bounded on one side by the same horizontal plane. |
| Ontology: | Spatial Ontology [BSPO:0000068] |