Girls and women have three separate openings in the pelvic area: the urethral opening (where urine comes out), the vaginal opening, and the anus. These three openings are close together but completely separate, each connected to its own internal system and serving a distinct function.
This is one of the most commonly searched anatomy questions online, and for good reason. Sex education often glosses over the specifics, leaving many people unsure about basic anatomy well into adulthood. Here’s a clear breakdown of each opening, where it’s located, and what it does.
Three Openings, Three Functions
All three openings are located between the legs, but they’re arranged front to back in a specific order. The urethral opening is at the front, closest to the belly. The vaginal opening is just behind it. The anus is farthest back, separated from the vaginal opening by a small patch of skin called the perineum.
Each opening belongs to a completely independent body system. The urethral opening connects to the urinary system, the vaginal opening connects to the reproductive system, and the anus connects to the digestive system. Nothing crosses between them internally.
The Urethral Opening
The urethral opening is the smallest of the three and the one most people have trouble locating. It sits between the clitoris and the vaginal opening. This tiny hole is the exit point for the urethra, a short tube that carries urine from the bladder out of the body. In women, the urethra is much shorter than in men, which is one reason urinary tract infections are more common in women.
Because this opening is so small and tucked between other structures, many people don’t realize it exists as a separate hole. Some assume urine exits through the vagina, but it doesn’t. These are two distinct openings with no internal connection.
The Vaginal Opening
The vaginal opening sits just behind the urethral opening. It’s the entrance to the vagina, an elastic, muscular canal that extends inward to the cervix (the lower part of the uterus). This single opening serves multiple roles: menstrual blood exits through it, it’s the canal through which a baby is delivered during vaginal birth, and it’s where penetration occurs during intercourse.
The vaginal opening is partially surrounded by the hymen, a thin ring of tissue. The hymen is not a seal that fully covers the opening. In most girls, it naturally has a gap that allows menstrual blood to pass through. The shape and size of the hymen vary widely from person to person. In rare cases (about 1 in 1,000 births), a condition called an imperforate hymen means the membrane completely covers the vaginal opening. This is typically identified and treated during adolescence when menstrual blood has no way to exit.
The Anus
The anus is the third and most posterior opening, located behind the vaginal opening with the perineum in between. It’s the end point of the digestive tract and is surrounded by a ring of muscle called the sphincter, which controls when stool is released. This opening is part of an entirely separate body system from the other two and is identical in function to the male anus.
How These Openings Are Arranged
The urethral and vaginal openings are both located within an area called the vulvar vestibule, which is the smooth tissue between the inner lips (labia minora). The vulva is the external genital area as a whole, and it includes the clitoris, the inner and outer lips, and the vestibule where those two openings sit. Small glands on either side of the urethral and vaginal openings produce moisture for lubrication and protection.
From front to back, the order is: clitoris, urethral opening, vaginal opening, perineum, anus. All of these structures are packed into a relatively small area, which is why the anatomy can be confusing without a clear diagram or explanation. But each opening leads to a completely different system inside the body, and understanding that distinction is the key point.
Why This Gets Confusing
Surveys consistently show that many adults, including women themselves, are uncertain about how many openings they have. Part of the confusion comes from the fact that these openings aren’t easy to see without a mirror, and part comes from inadequate anatomy education. The external area is often referred to loosely as “the vagina,” but the vagina is actually just the internal canal. The visible outer area is the vulva, and it contains two of the three openings (urethral and vaginal), while the anus sits just behind it.
Knowing the difference between these three openings matters for practical reasons: understanding where to aim when inserting a tampon, recognizing symptoms of urinary tract infections versus vaginal infections, and communicating clearly with a healthcare provider about where discomfort is occurring.