The uterus, also known as the womb, is a pear-shaped, muscular organ in a woman's pelvis. It is where a baby grows during pregnancy. The uterus has two main parts: the cervix, which is the lower part that opens into the vagina, and the corpus, or the main body of the uterus. The inner lining of the uterus is called the endometrium, which thickens during the menstrual cycle to prepare for a possible pregnancy.
