The inner layer of the wall of the uterus, which envelops the embryo, forms a part of the placenta, and is discharged with it.

The mucus lining of the uterus that's passed after childbirth or during the menstrual period.

part of endometrium reacting to implantation; later consisting of basal, capsular and parietal regions.

Differentiated endometrium of pregnancy which is shed (like a deciduous tree sheds its leaves) at childbirth or miscarriage, as part of the afterbirth. During pregnancy it has important hormonal functions (see decidual cells).

that portion of the endometrium of the uterus (all but the deepest layer) that is modified for pregnancy and shed after childbirth

the epithelial tissue of the endometrium

gestational endometrium

deciduus - deciduous, falling off]. The material of the endometrium of the mammalian uterus during pregnancy.

Decidua is the term for the uterine lining (endometrium) during a pregnancy. It is formed under the influence of progesterone and serves to support and interact with the gestation. The decidua represents the maternal portion of the placenta.