The vulva is not part of the vagina. They are two separate structures. The vulva is the entire external genital area you can see between your legs, while the vagina is an internal canal that sits behind the vulvar opening. The two are often confused because “vagina” has become a casual catch-all term for everything down there, but anatomically, they are distinct.
Vulva vs. Vagina: Where Each One Is
The vulva is everything on the outside. If you held a mirror between your legs, every structure you’d see is part of the vulva: the outer lips (labia majora), inner lips (labia minora), the clitoris, the urethral opening where urine exits, and the vaginal opening. The vulva also includes the small area of tissue between the vaginal opening and the anus, called the perineum. All of these structures together make up the vulva.
The vagina is the muscular canal on the inside of your body, starting at the vaginal opening and ending at the cervix (the lower part of the uterus). It’s roughly 3 to 4 inches deep when unaroused, though it can stretch to 4 to 8 inches during arousal. The vaginal walls have three tissue layers that keep the canal moist, elastic, and structurally supported. You can’t see the vagina from the outside. Only its opening is visible, and that opening is located within the vulva.
So rather than the vulva being part of the vagina, the relationship is closer to the reverse: the vaginal opening is one structure within the larger vulva.
Why the Two Get Confused So Often
Almost everyone uses “vagina” when they actually mean “vulva.” It’s one of the most common anatomical mix-ups in everyday language. A survey by the British Society for the Study of Vulval Disease found that two-thirds of women aged 16 to 35 had difficulty using the words “vagina” and “vulva” correctly, with 40% resorting to code names like “lady parts” instead. In a separate study at a UK teaching hospital, only 9% of participants could correctly label all the structures of the external female genitalia on a diagram.
This confusion matters more than it might seem. If you’re trying to describe a symptom to a doctor, saying “my vagina itches” when the irritation is actually on your vulva could point toward very different causes. Vaginal symptoms often involve internal infections or discharge, while vulvar symptoms tend to involve skin conditions, contact irritation, or external infections. Using the right word helps you get the right diagnosis faster.
What Each One Does
The vulva and vagina serve overlapping but distinct roles. The vagina is involved in menstruation (period blood exits through it), conception (sperm travels through it), childbirth (a baby passes through it during vaginal delivery), and sexual pleasure (its walls contain nerve endings that respond to stimulation during penetration).
The vulva handles functions the vagina can’t. The clitoris, located at the front of the vulva, is the primary source of sexual pleasure for most women, with thousands of nerve endings concentrated in a small area. The labia protect the vaginal and urethral openings from friction and bacteria. The urethral opening, also part of the vulva, is where urine exits the body. These external structures also play a role during childbirth, stretching to allow the baby to pass through.
They Develop From Different Tissue
The vulva and vagina don’t just look different and function differently. They form from entirely separate tissue during embryonic development. The vagina develops from an internal structure called the paramesonephric duct, which also gives rise to the uterus and fallopian tubes. The vulva forms from external tissue called the vestibular plate, which separates into folds that eventually become the labia minora and other external structures. This different origin is part of why the two areas respond differently to hormones, infections, and skin conditions throughout life.
How to Care for Each Area Differently
Because the vulva is external skin and the vagina is an internal mucous membrane, they need very different care. The American College of Obstetricians and Gynecologists recommends washing the vulva with plain, fragrance-free soap and rinsing with cool or lukewarm water, then gently patting dry.
The vagina, on the other hand, should not be washed at all. It cleans itself through natural discharge, which contains beneficial bacteria that maintain a healthy pH. Douching, using vaginal deodorants, or inserting any fragranced products disrupts this bacterial balance and increases the risk of infections like bacterial vaginosis or yeast infections. ACOG specifically advises against douching, vaginal hygiene products, perfumes, and deodorants used internally. For menstrual products, unscented pads or tampons without a plastic coating are the safest choice.
Even toilet paper matters. Unscented, uncolored toilet paper is best, and wiping front to back prevents bacteria from the anal area from reaching the vulva or vaginal opening. Baby wipes, feminine sprays, and talcum powders should be avoided entirely.