decidua reflexa

de·cid·u·a cap·su·lar·is

the layer of endometrium overlying the implanted chorionic vesicle; it becomes progressively attenuated as the chorionic vesicle enlarges and, by the fourth month, is squeezed against the decidua parietalis and thereafter undergoes rapid regression.

decidua reflexa

de·cid·ua cap·su·lar·is

(dē-sij'ū-ă kap-sū-lā'ris) [TA]
The layer of endometrium overlying the implanted chorionic sac; it becomes progressively attenuated as the chorionic sac enlarges and, by the fourth month, is squeezed against the decidua parietalis and thereafter undergoes rapid regression.
Synonym(s): decidua reflexa, membrana adventitia.