chorionic cavity


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chorionic cavity

the space surrounding the primary yolk sac and amniotic sac, except where the connecting stalk attaches to the cytotrophoblast of the blastocyst.

chorionic cavity

extraembryonic coelom.

chor·i·on·ic cav·i·ty

(kōr'ē-on'ik cav'i-tē)
The space surrounding the umbilical vesicle (primary yolk sac) and amnionic sac, except where the connecting stalk attaches to the cytotrophoblast of the blastocyst.
Synonym(s): extraembryonic celom.
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