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The vulva is capable of many complex functions. Because the term is often used incorrectly, or it is called by an incorrect name, many of the proper names for parts of this region are mysterious or confusing.

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Introitus

The clinical term for the vaginal opening is the introitus. This inner part of the labia leads to the cervical opening of the uterus. It is the entry point of the penis during coital sex and for tampons and menstrual cups during a woman's period. With the help of the perineum, the space between the bottom of the vulva and the anus, the introitus also facilitates childbirth.

introitus vulvar anatomy
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Vulva vs. Vagina

Despite the terms sometimes being used interchangeably, the vulva and the vagina are different. The vagina is the internal part of the female genitalia, from the introitus up to the cervix, the opening to the uterus. The vulva is the area around the vagina. While the vagina is self-cleaning, the vulva needs regular cleansing or it may introduce infections into the vagina.

difference between vulva and vagina
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Labia Majora and Labia Minora

The labia are lips that cover the opening of the vagina that can swell with increased bloodflow. The labia majora are the fleshy outer lips with pubic hair, while the labia minora are inside the labia majora, between the clitoris and introitus. They vary in shape, size, and color, all of which can change with age.

labia minora majora Graphic_BKK1979 / Getty Images
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Clitoris

Located at the top of the vulva, where the labia minora meet, is the tip of the clitoris, whose only purpose is providing pleasure. It can be as large as a thumb or as small as a pea. The full clitoris is a spongy 5-inch organ that traverses both sides of the vagina. It has thousands of nerve endings, making it extremely sensitive.

clitoris tip nerves josefkubes / Getty Images

Mons Pubis

Also known as mons veneris, the mons pubis is a fleshy, prominent part of the vulva shaped like an upside-down triangle. Its fatty tissue acts as a cushion for the pubic bone. During puberty its texture changes as it becomes covered with hair. The mons pubis has oil-producing glands that play a role in pheromone production.

mons pubis pubic bone Shidlovski / Getty Images

Urethral Meatus and Skene Glands

The urethral meatus is the opening of the urethra that sits above the introitus and behind the clitoris. This is where urine is ejected. The lesser vestibular glands, known as Skene’s glands, are located on either side of the urethral opening. Their job is to lubricate the opening, but not all women have them.

urethral meatus skene glands ericsphotography / Getty Images

Vestibule and Bartholin Glands

The area that surrounds the opening of the vagina and the urethral meatus is the vestibule of the vulva. In addition to separating the vulva and the vagina, it is home to the greater vestibular glands or Bartholin glands. These pea-sized glands reside on either side of the introitus and secrete mucus to lubricate the vaginal opening, making intercourse more comfortable.

vestibule bartholin glands Peter Cade / Getty Images

Pudendal Nerve

The pudendal nerve starts from the sacral region in the lower back, between S2 and S4. It branches off into the inferior rectal nerve, which innervates part of the anal canal, the perineal nerve, which manages the labia majora and minora, and the dorsal nerve of the clitoris, which innervates the clitoral skin and is partially responsible for orgasms.

sacral pudendal nerve ivstiv / Getty Images

Lichen Sclerosus

Lichen sclerosus is a noncontagious skin disorder that can affect women at any age but is more likely to develop after menopause. Vulvar skin, particularly the labia, becomes itchy with white spots. In more severe cases, women experience blistering and bleeding. Corticosteroids are the most common treatment, and they need to be taken regularly to avoid recurrence.

lichen sclerosus skin disorder Niran_pr / Getty Images

Vulvodynia

Some women experience unexplained burning, ache, or pain in the vulvar region, a condition called vulvodynia. While the vulva looks normal, the pain can be triggered by touch, sex, tampon use, or any normal activity. Vulvodynia has no clear cause, and it can go away on its own. While medications can help manage this condition, some women require surgery.

Disclaimer

This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.