The decidua is the modified mucosal lining of the uterus (that is, modified endometrium) that forms every month, in preparation for pregnancy. It is shed off each month when there is no fertilized egg to support. [1] The decidua is under the influence of progesterone. Endometrial cells become highly characteristic.

2023年10月30日 · The decidua is the modified or specialized mucosal lining of the uterus (endometrium) that forms during the pregnancy. During its formation, the decidua has several distinct parts, named based on the location of each part in relation to the embryo.

The decidua has been known as maternal uterine tissue, which plays essential roles in protecting the embryo from being attacked by maternal immune cells and provides nutritional support for the developing embryo prior to placenta formation.

Decidua is the term for the modified mucosal lining of the uterus (modified endometrium) during a pregnancy, which forms the maternal part of the placenta. Decidua is formed in a process called decidualization under the influence of progesterone.

The decidua is a specialised, highly modified endometrium that develops during pregnancy. The decidual reaction is completed only after blastocyst implantation. In the decidua, maternal blood contacts the trophoblast; thus, it is an essential medium for haemochorial placentation and pregnancy success.

5 天之前 · The maternal uterine endometrium stromal cells (fibroblast-like) are transformed by steroid hormones (progesterone) and embryonic signals into the decidua. The entire maternal decidua is divided into three regions: decidua basalis, decidua …

Decidua is characterized by small rounded nuclei with ample cytoplasm and inconspicuous spiral arterioles (Fig. 16.43A). Variable amounts of inflammation may be present. When the goal is to exclude ectopic pregnancy, the pathologist may be compelled to make the distinction between inflamed decidua and decidua with implantation site.

At the implantation location, the maternal endometrium is changed by the decidual reaction epithelial transformation of the fibroblasts of the uterine stroma, in that lipids and glycogen accumulate) and is called the decidua.

The decidua is the specialized uterine lining that forms during pregnancy to support the implantation and development of the embryo. It undergoes significant changes to accommodate the growing fetus and facilitate maternal-fetal exchange.

a name applied to the endometrium during pregnancy, all of which except for the deepest layer is shed after childbirth; called also decidual or deciduous membranes. adj., adj decid´ual. basal decidua (decidua basa´lis) that portion lying under the implanted ovum and chorion.