| Term Name: | perivitelline fluid |
|---|---|
| Synonyms: | |
| Definition: | Extraembryonic fluid that fills the space between the embryo and the chorion. Provides mechanical cushion, defense from pathogens and helps maintain osmotic balance. |
| Appears at: | Zygote:1-cell (0.0h-0.75h) |
| Evident until: | Pharyngula:High-pec (42.0h-48.0h) |
| Ontology: | Anatomy Ontology [ZFA:0005943] |
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