The uterus, also called the womb, is a major female reproductive sex organ. It is connected on one end to the Fallopian tubes while other opens into the vagina via the cervix. The uterus features a lining called the endometrium. This lining thickens each month and, in the absence of a pregnancy, is shed causing menstruation or what is commonly known as a "period."
Although the uterus is not stimulated during sexual intercourse, the uterus does contract (along with the vagina) during orgasm. The positioning of the uterus in the body may also affect how comfortable certain sex positions are for particular people. Hysterectomy, or removal of the uterus, can also cause sexual symptoms, such as reduced sex drive, reduced sensation and vaginal dryness.