Clue is on a mission to help you understand your body, periods, ovulation, and so much more. Start tracking today. In a non-aroused state, the walls of the vagina are collapsed against each other. The vagina changes: during sex, throughout the menstrual cycle, and with age and different life stages. People often use the term vagina to refer to the entire female genital region between the legs—but this is incorrect.

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In mammals , the vagina is the elastic, muscular part of the female genital tract. In humans, it extends from the vulva to the cervix. The outer vaginal opening is normally partly covered by a membrane called the hymen. At the deep end, the cervix neck of the uterus bulges into the vagina. The vagina allows for sexual intercourse and birth. It also channels menstrual flow menses , which occurs in humans and closely related primates as part of the monthly menstrual cycle. Although research on the vagina is especially lacking for different animals, its location, structure and size are documented as varying among species. Female mammals usually have two external openings in the vulva, the urethral opening for the urinary tract and the vaginal opening for the genital tract. This is different from male mammals, who usually have a single urethral opening for both urination and reproduction.
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Just as women can have different sized breasts, hands, and feet, the size and depth of vaginas can also vary. According to one study, the average depth of a vagina is about 3. Other sources suggest that the average range of size may be about 3 to 7 inches approximately 7. In fact, the depth of the vagina from the opening to the tip of the cervix can measure anywhere up to 7 inches
Performing a vaginal self-exam at home can help you familiarize yourself with your own body, as all vaginas are different. It can also help you identify changes and abnormalities. A gynecologist can check you for symptoms of sexually transmitted diseases STDs and perform a Pap smear test to screen for cervical cancer. Here are the symptoms you can look out for and discuss with a gynecologist at your next appointment.