What Is the Decidua Capsularis

[ kăp′sə-lâr′ĭs ] n. The layer of endometrium overlying the implanted chorionic vesicle that progressively diminishes as the chorionic vesicle enlarges.

What is the function of decidua Capsularis?

The decidua capsularis is the portion underlying the chorion laeve and fuses with it to become the outermost component of the peripheral membranes. As the amniotic cavity expands to fill the uterus, the decidua capsularis becomes thinner until the chorioamnion is in direct contact with the decidua parietalis.

What happens to decidua Capsularis?

After the 4th month the growing fetus brings the decidua capsularis into contact with the decidua parietalis. The fusion of the two deciduae leads to the disappearance of the uterine cavity.