extraembryonic coelom

(redirected from Chorionic cavity)
Also found in: Medical, Wikipedia.

extraembryonic coelom

[¦ek·strə‚em·brē′än·ik ′sē·ləm]
(embryology)
The cavity in the extraembryonic mesoderm; it is continuous with the embryonic coelom in the region of the umbilicus, and is obliterated by growth of the amnion.
Mentioned in ?