What is the role of the endometrium during pregnancy?
The endometrium is the innermost lining of the uterus and plays a critical role in pregnancy. During the menstrual cycle, the endometrium undergoes cyclic changes, and its thickening is essential for implantation. Once implantation occurs, the endometrium transforms into the decidua, which provides nutritional support to the developing embryo and forms part of the placenta.
