Primitive groove
The primitive groove is a feature present during prenatal development. It is a shallow groove that appears on the surface of the primitive streak.[1][2] It is created by infolding of epiblastic cells.[1][2] Its anterior end communicates with the yolk-sac by means of the blastophore (an aperture).
| Primitive groove | |
|---|---|
 Surface view of embryo of Hylobates concolor. The amnion has been opened to expose the embryonic disk. | |
| Details | |
| Carnegie stage | 9 |
| Identifiers | |
| Latin | sulcus primitivus |
| Anatomical terminology | |
References
This article incorporates text in the public domain from page 47 of the 20th edition of Gray's Anatomy (1918)
- Moore, Keith L.; Persaud, T. V. N.; Torchia, Mark G. (2018). "4 - Third Week of Human Development". The Developing Human (11th ed.). Saunders. pp. 47–63. ISBN 9780323611541.
- Standring, Susan (2020). "10 - Cell populations at gastrulation". Gray's Anatomy (42nd ed.). Elsevier. pp. 188–195. ISBN 9780702077050.
External links
- Swiss embryology (from UL, UB, and UF) hdisqueembry/triderm02
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