The cervix may be duplicated in situations such as bicornuate uterus and uterine didelphys. This includes the uterus and ovaries or urinary bladder. Estrogen thickens the endometrium of the uterus. The entire uterus and ovaries are then removed. A complete hysterectomy involves the removal of the body, fundus, and cervix of the uterus. The cervix is the narrow end of the uterus. The cervix is more tightly connected to surrounding structures than the rest of the uterus. Endometritis is inflammation of the inner lining of the uterus (endometrium). The environment in the uterus and fallopian tubes are advantageous. The ovary is separated from the uterus and round ligament. Ectopic pregnancy is a complication of pregnancy in which the embryo attaches outside the uterus. In some instances the borders of the uterus and ovaries appear indistinct. The ER is expressed in specific tissues including the ovary, uterus and breast. Women were warned not to divert needed energy away from the uterus and ovaries. Gravid hysterectomy refers to removal of the whole uterus while still containing the pregnancy.