| Term Name: | ectoderm | 
|---|---|
| Synonyms: | |
| Definition: | The outer layer of the embryo derived from the epiblast. The definitive ectoderm will give rise to such tissues as epidermis, the central nervous system, neural crest, and sensory placode. | 
| Appears at: | Gastrula:75%-epiboly (8.0h-9.0h) | 
| Evident until: | Larval:Day 6 (144.0h-168.0h) | 
| Ontology: | Anatomy Ontology [ZFA:0000016] | 
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