The modern woman gets to choose if and when she menstruates, thanks to medicine's understanding of the human hormonal systems. This means that should you have an important event like a wedding or vacation, you can use hormones to delay your menstrual cycle.

Eighty out of every 100 women have non-cancerous fibroid tumors, also called myomas, by the time they reach the age of 50, according to the University of Michigan Health System.

Menopause ushers in many changes in your body. While no longer having monthly periods may come as a welcome change, growth of some facial hair on your chin or upper lip usually isn't.

Peri-menopause is the time period before menopause when hormonal fluctuations are common. Peri-menopause can last as long as 10 years; during this time, menstrual cycles may change in length, frequency, duration and intensity. During peri-menopause, ovulation may not occur every month; according to Gerson Weiss, M.D.

Hot flashes are characterized by a sudden feeling of intense heat that starts around your head and neck and spreads down to your chest, says FamilyHealthGuide.co.uk. Lightheadedness is a feeling of dizziness or faintness, either when sitting or standing, says livingwithanxiety.com.

Cervical traction is a therapeutic tool used to pull or separate the vertebrae in the spine. According to "Therapeutic Exercise: Foundations and Techniques,"

Before removing a suspected ovarian cyst, a gynecologist frequently requests additional tests, such as a sonogram and CA-125 blood test. The sonogram allows the doctor the get a better picture of your ovaries, allowing her to see the size of the cyst and its precise location.

Ovarian cysts commonly affect women during their reproductive years. While most ovarian cysts are small and go unnoticed, others may cause a range of symptoms -- from mild discomfort to severe pain.

Endometriosis is the presence of endometrial tissue, the tissue that lines the uterus, in places outside the uterus. Endometrial tissue can spread as far as the brain, but one of the most common sites for endometrial implants is the uterosacral ligament, located behind the cervix.

Most women know to get regular pap smears, but many don't know what to make of the results when they come back abnormal. Getting back abnormal pap results can create a lot of anxiety around the fear of having cervical cancer. However, abnormal results usually do not indicate cancer.

First responders at an accident scene are usually the ones to place a cervical collar around an injured person's neck to protect his vertebrae (neck bones) from moving erratically. This plastic or foam brace is secured carefully around the neck to limit the motion of your upper spine.

By the time they reach menopause, half of all women have had uterine fibroids, according to the National Institutes of Health. Fibroids are noncancerous tumors that develop within the uterus and may range from very small to a size large enough to fill the uterus.