| Name: | trigeminal placode |
|---|---|
| Synonyms: | trigeminal placodes |
| Definition: | The ectodermal rudiment of the trigeminal ganglion, distinguishable during much of the segmentation period. |
| Ontology: | Anatomy Ontology [ZFA:0000162] |
| Name: | primary neuron |
|---|---|
| Synonyms: | |
| Definition: | Primary neurons are neurons develop shortly after gastrulation during early segmentation stages, between 10-12 hpf, before the neural tube is formed. Each neuron occurs in a stereotyped location along the neuraxis. Axons from these cells grow via a growth cone pioneering a stereotyped pathway. These axons form the pattern of the early nervous system. |
| Ontology: | Anatomy Ontology [ZFA:0009242] |