Anatomy: Vulva!

Today we're going to discuss external genitalia, or the vulva.  Contrary to popular vernacular, the "vagina" is not the correct term for the sum total of all your lady bits; the vagina itself is only one anatomical structure, and is internal, whereas the vulva is comprised of all the external parts of the female genitals.  If someone says they "shave their vagina," they probably mean vulva, unless they literally stick a razor inside their vaginal opening (which sounds very dangerous and unpleasant and is not recommended).

Warning: There are a lot of pictures and diagrams of female genitals in this post.  None of them are in a sexualized context, but if you're uncomfortable looking at images of ladybits, this probably isn't the post for you.

I strongly recommend finding a mirror (a makeup compact mirror works well for this) and taking a good look at your own genitals, finding all the structures that we'll be discussing in this post.  It's important to become familiar with your own body, not just to improve your comfort in your own skin but because the best way to know when something is wrong is to know what everything looks like when you're healthy. Swelling, color changes, or new bumps can indicate a medical condition that you should get checked out by your doc ASAP.

A very simple diagram of the vulva, which 

we'll be using as our roadmap.

We'll start off with the mons pubis (pubic mound, also known as the mons veneris or "mound of Venus).  This is that little mound right below the stomach and between the tops of the thighs, which even the skimpiest of thongs and bikinis will cover.  It lies directly on top of the pubic bone and is the uppermost part of the vulva. Both genders have a mons pubis, so the term mons veneris is often used to specify the female mons. The fatty tissue of the mons is very sensitive to estrogen levels, so it enlarges during puberty and will continue to fluctuate in size during a woman's menstrual cycle.

A first-person view of the mons pubis.  This woman has

chosen to shave  or wax hers of pubic hair, making the 

shape of the mound clearly visible.

During puberty, pubic hair will start to grow on the mons and labia majora. We will have a much longer and more in-depth look at pubic hair (and society's views on women's pubes specifically) in a later post, but here is a brief run-down on the short-and-curlies. Pubic hair is common to both men and women and begins to grow on the mons pubis during puberty in response to rising levels of androgens (sex hormones).  It is generally coarser, thicker, and darker in color than other body hair, though the thickness, density, and texture varies greatly from person to person. Pubic hair growth spreads as puberty continues, covering not only the mons but also the outer labia and sometimes the top of the inner thighs as well.

Naturally growing pubic hair, not trimmed or shaved.

Notice how it covers the mons, the labia, and some of the thigh.

The mons pubis divides into the labia majora (or outer lips), two fleshy folds of skin that protect the other, more delicate structures of the vulva.  The color of the outer portion of the labia majora is usually fairly close to skin color, though they often darken when you're aroused.  The insides of the folds are usually pink or brownish, but there is considerable variation.

Within the labor majora are the labia minora; while this literally translates to "smaller lips," the labia minora are often quite large and may protrude beyond the majora.

I'm gonna drop some self-esteem on you right now: your labia minora ARE NOT WEIRD.  If the only image you've ever seen of them are in porn or diagrams like the one at the top of this post, you probably thing that labia minora are supposed to be pink, small, and perfectly even.  Hell, labia minora in porn are often so small as to be almost invisible. Like the breasts, each part of the vulva is subject to a wide degree of variation from person to person in terms of size, shape, and color, and the labia minora is no exception.  Yours may be pink or brown or black; they might be long and extend past the outer labia, or short and rest fully within it; they might be thin or thick; they might be perfectly symmetrical or one may be longer, shorter, thinner, fatter, or a different color than the other. And this is TOTALLY NORMAL.  As long as they're not causing you pain or discomfort, there is nothing wrong with your labia. They're awesome.

A few variations of the female vulva.  Note the differences

in pubic hair (shaved, unshaved, and texture), coloration, the different 

shapes of the labia majora, the size variance of the labia minora.  Also, 

the centermost photo shows a clitoral hood piercing.

Okay, moving on.  Where the labia minora meet at the top of the vulva is the clitoris. Ahhh, the clitoris, so glorious, so misunderstood.  As with pubic hair, we're going to have a long look at the clitoris a bit later on, so for now we'll just stick to the portion of it that will be visible during your mirror exam (which you're totally going to do, right? RIGHT???).  The visible portion of the clitoris is called the glans, and is typically about the size of a pea, though they can vary greatly in size.  The clitoral glans is highly sensitive, and contains as many nerve endings as its male counterpart, the glans or head of the penis. The clitoral glans is usually covered by a small fold of skin call the clitoral hood, which retracts to expose the clitoris during arousal.  In women with a larger clitoral glans or a smaller clitoral hood, the clitoral glans may be partially or fully exposed at all times.  The clitoral hood is the female equivalent of the male foreskin, which also protects the sensitive glans.

A photograph of the vulva, showing (1) the clitoral glans hidden

by the clitoral hood and labia minora, and (2) the clitoral glans 

fully exposed.

The area between the labia minora is called the vulvar vestibule and contains the urethral opening and the vaginal opening.  The urethral opening is where urine from the bladder passes out of the body. Yes, this is a separate "hole" from the vagina!  You do not pee out of your vagina, and menstrual fluid does not come out of the same opening as urine.  The urethral opening is located below the clitoris, and the vaginal opening is just below that.  The term "vaginal introitus" is technically more correct than "vaginal opening," as the vagina itself is usually closed or collapsed except during arousal or insertion.  The vaginal introitus is usually partially covered by a thin, stretchy membrane called the hymen.

The hymen is a structure that is widely misunderstood, and many men and women are woefully misinformed as to its nature.  In fact, the hymen and its myths, misinformation, and social implications will be the sole topic of next week's post.

I apologize for this post going up so late (it's nearly 8pm here); it's just been a super busy day. I will do my best to have next week's post up in a more timely fashion.

Anatomy: BREASTS!

Breasts. Boobs, titties, tatas, melons, hooters, cans, jumblies, yabbos, balloons, fun bags, dirty pillows, sweater beasts, knockers. The Girls. The Twins. Thelma and Louise.

Whatever you call them, boobs are pretty great.  They're soft yet firm, bouncy, jiggly, and under a certain set of conditions, can produce fuel for periphery micro-humans.

So, let's start off by talking about development, anatomy, and function.  Human breasts are unique in that they are the only organ not present at birth - they develop instead during puberty, in response to rising levels of estrogen which direct fat deposits to the breasts and cause the milk ducts to grow.  This is also the stage in which the nipple and areola (the dark area of skin around the nipple) enlarge. After menstruation begins, the breasts enter a second stage of development in response to progesterone, which results in maturation of the milk glands (or lobules). The breast doesn't grow as much during this second stage as in the first, but is important later to make lactation possible.

Image courtesy of dentalarticles.com

1. Chest Wall, which separates the chest cavity (containing all the important organs) from the muscle layer above it.

2. Pectoral muscle aka "pecs." This thick, fan shaped muscle makes up the bulk of the chest muscle in males and sits right under the breast in females.

3. Lobules are hollow cavities which are lined with milk-secreting cells.  Each lobule has a duct which connects to the opening in the nipple. 

4. Nipple, the opening through which breast milk is delivered.

5. Areola, the circular area of colored skin surrounding the nipple.

6. Lactiferous ducts carry milk from the lobules to the nipple.

7. Fatty tissue that develops during puberty.

8. Skin layer which keeps all this awesome machinery from showing through.

The primary function of the breasts, as you can probably figure from the diagram above, is to produce milk for infants.  Human beings are mammals, a name which derives from the mammary gland - another name for all the milk-producing lobules present in the breast tissue.

The secondary function of the breasts it to be fabulous and sexy.

Oh River, you sexy thing.

But seriously.  Research suggests that women with larger breasts were viewed as more fertile and more capable of providing enough milk to produce healthy, strong offspring.  Additionally, the large deposits of fatty tissue in the breasts were essential for helping the human fetus develop its awesomely powerful brain.  So your boobs put the FUN in FUNCTIONAL.

Now, if the only breasts you've ever seen have been in movies, porn, and textbooks, you probably think there is only one type of "normal" breast - perky, round, sits high up on the chest, with pretty pink nipples and areolas about the size of a quarter.

NOPE.

Boobs come in a variety of shapes and sizes, and nipples and areolas can be any color from pink to purple to brown to black, and areolas can be so tiny they're invisible or they can cover the majority of the breast.  One breast may be bigger than the other, or they may sit low on the chest wall or hang down.  Nipples can be large and erect or small and flat. And y'know what? THESE ARE ALL NORMAL.

You may have been told by others, or have told yourself, that your boobs are weird or ugly or unattractive.  But they're not.  They're boobs, and they vary in shape and size and coloration the same as any other body part. Breasts change in size and shape through your lifetime, varying with changes in weight, hormones levels, your menstrual cycle, and of course if you choose to get pregnant and/or breastfeed.

The following images are from a wonderful website called the Normal Breast Gallery and show just a small sample of the variations in normal, healthy, beautiful breasts out there.  If you feel self-conscious about your breasts, I strongly encourage you to browse through that gallery and pay attention the enormous variety of forms out there and read the stories of other women and their struggles with body acceptance.

I truly believe that there is no such thing as an ugly boob. Of course, if your breasts are large enough that they cause you pain or discomfort, in which case you may which to speak to your doctor about breast reduction surgery.  The self esteem of many women is intricately tied to their bodies, and breasts play a large role in this, so I feel it's very important to work on appreciating your breasts no matter their size, color, or shape.  If you find that you cannot feel sexy or confident or feminine with your current breasts, there are many options for breast augmentation (enlargement, reshaping, etc) that you can discuss with your doctor. If you have a partner or a friend that says negative things about your breasts (or any part of your body), they probably don't deserve the privilege of seeing them. There is really only one thing your or anyone else should ever say to your breasts: 

Watch this until you believe it.

Seriously.

Next week: external genital anatomy including the mons pubis, pubic hair, and labia.  The clitoris and hymen will have their own posts.