| Name: | cranial nerve II |
|---|---|
| Synonyms: | CN-II, optic, optic nerve |
| Definition: | Cranial nerve which is comprised of retinal ganglion cell axons running posterior medially towards the optic chiasm, at which the axons cross the midline and after which the structure is termed the optic tract. |
| Ontology: | Anatomy Ontology [ZFA:0000435] |
| 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] |