Think of the pelvic floor as a hammock, or sling, of muscles in your lower abdomen that runs across your pelvis. In men, the pelvic floor includes the muscles, tissue and nerves that support the bladder, rectum and other pelvic organs. In women, the pelvic floor includes the muscles, ligaments, connective tissue and nerves that support the uterus and vagina.
When you are unable to control the muscles in your pelvic floor, it is called pelvic floor dysfunction. A traumatic injury to the pelvic area, such as in an accident, or complications from vaginal childbirth can contribute to this condition, but many times there is no cause.