| Name: | hypochord |
|---|---|
| Synonyms: | |
| Definition: | Portion of tissue that arises from the arise from the lateral edges of the shield and is located immediately ventral to the notochord. The hypochord is thought to play a role in positioning the dorsal aorta. Unlike in frogs and axolotl, the hypochord does not appear to be endodermally derived. |
| Ontology: | Anatomy Ontology [ZFA:0000031] |
| Name: | aplastic |
|---|---|
| Synonyms: | aplasia, undeveloped |
| Definition: | Absence of an organ, tissue or cell due to failure to develop from a primordium or precursor cell. |
| Ontology: | Phenotypic Quality Ontology [PATO:0001483] |