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Female Sexual Anatomy

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The sex organs of a woman are almost wholly enclosed within her body. As shown in the accompanying charts, they consist chiefly of the vulva, the vagina, the uterus, and the ovaries. While the breasts are also a part of a woman's sex equipment, they need not be considered here except to say that in some women they respond readily to touch stimulation. Like the lips, they may be sensitive to kissing and fondling to a greater or less degree.

A few women respond intensely to such touch, even to the point of orgasm, some do not respond at all, but the great majority are somewhere in between. The sensitivity of the breasts in most cases has little to do with a woman's total adequacy of response, many women with little or no sensitivity being most competent otherwise.

More about female anatomy

The vulva is the collective name for all the external sexual parts lying in the groove of the thighs from the pubic eminence in front to the anal opening at the rear between the buttocks. These include the large hair-covered folds (outer labia) , the small mucous-lined inner folds (inner labia) , the clitoris with a covering fold of skin called the prepuce, the hymen, the bladder opening, and the archway where the vaginal opening is located. Some very good information can be found here - which should ease any concerns you have.

The outer labia start below the pubic eminence in front and run back between the thighs, tapering off just before the anal opening. They are covered with pubic hair, and the skin texture is similar to that of the thighs adjoining them. They have a generous supply of sexual nerves and, under favorable conditions, respond to stroking or to touch stimulation.

Beneath the upper end of the groove formed by these folds is a small, highly sensitive spot about the size of a pea, called the clitoris. It is covered by a thin fold of skin known as the prepuce. Just as a man has rudimentary breasts, so the clitoris is the tip of what would have been a penis if it had developed. It serves as the chief seat of sexual nerve endings in the woman and is very responsive to touch or stroking. During sexual excitement it usually increases greatly in size and sensitivity.

The two inner labia extend downward from the clitoris inside the outer folds and extend backward past the vaginal opening. In some women these folds are quite small, and in others so large that they may even extend well outside the groove formed by the outer folds. They too are sexually sensitive and capable of considerable enlargement when the woman is sexually aroused.

Near the base of these small inner folds are the openings of two small glands which secrete a clear, thin, saliva-like fluid. During sexual excitement these glands usually produce an ample supply of  lubricating fluid, though the amount seems to vary considerably. This variation may be due to many things, such as the time in the menstrual cycle, the degree of stimulation, the age of the woman, and other factors peculiar to the individual woman. In some women this outpouring of lube is an important sign of sexual readiness, but because of the circumstances just mentioned it may not always be relied upon.

The bladder opening is located just below the clitoris and above the vaginal opening. A tube called the urethra connects the bladder with this opening, through which the urine is discharged. The flow of urine is controlled by a nerve mechanism which contracts or releases a sphincter (closing) muscle just below the base of the bladder.

There are similar sphincter muscles in various parts of the body, such as at the anal opening and at the entrance of the vaginal canal. This is described here.

The entrance to the vaginal canal is located below the bladder opening between the two inner folds, well forward of the anus, the opening to the rectum.

In some women the opening to the vaginal canal is partially covered by a thin fold of tissue, called the hymen. Sometimes this opening is as small as a little finger; in other cases the hymen is practically nonexistent, or so thin and so slight that it offers no serious resistance when intercourse is first attempted. 

The vaginal canal is a tube several inches in length connecting the womb or uterus with the outside opening. Its walls are composed of soft, accordion-pleated folds, which make it so easily expanded that it cart readily pass the head of a baby during the birth process. If there is adequate lubrication and the woman is able to control at will the muscle inside the external opening, it is seldom, if ever, that the size of the vaginal canal is any handicap to sexual pleasure.

Normally the walls of the vagina lie folded close together. Being lubricated they do not chafe or rub, and the woman is quite unconscious of them. When aroused, they are sensitive to touch. The nerves of sexual feeling are said to be in the first part of the vagina, but many women experience stimulation from the deeper parts of the vagina too.

The uterus or womb is a pear-shaped organ with muscular walls and is a little smaller in size than a woman's fist. It hangs suspended near the center of the pelvis by means of ligaments which permit it to be moved forward, backward, sidewise, or upward. The smaller and lower end extends into the vaginal canal for a half-inch or more. It is in this upper end of the vaginal canal where the ejaculation of the sperms or male cells occurs during intercourse. The sperms travel from the vaginal canal up through the opening in the cervix, into the uterus, and on out into the Fallopian tubes. There, if an egg cell is present, fertilization may take place.

Because the uterus is so fully movable in the pelvis, it is not always found in the same position in all women or even at all times in the same woman. It usually tips forward at a more or less right-angle position from the vaginal canal, but it may be shifted backward by the filling of the bladder or forward by the filling of the rectum. During pregnancy the uterus is capable of very rapid growth, when it pushes up into the lower abdomen and becomes about a foot in length and eight inches in diameter. After childbirth it rapidly shrinks in size and within a few weeks resumes its normal shape and position.

The ovaries are located to the left and right of the uterus, deep in the pelvis. These glands, like the uterus, tend to increase and decrease in size with the variations of the menstrual cycle. Each month one of them produces an egg cell or ovum, as well as certain important hormones, which pass into the blood stream. The egg cell develops in the form of a cyst, which means that it grows in a sac of fluid. This is a normal cyst, and when the egg bursts through the thin walls the ovary quickly heals over behind it.

About two weeks before an egg cell ripens, the glands of the body start providing the walls of the uterus with a rich supply of nutriments. During this period the inner linings of the, cavity of the womb, becomes thick and spongy in readiness to receive the fertilized egg cell. If the egg is not fertilized, the thickened walls of the uterus commence to ooze after about two weeks' time, and the thickened lining is discharged in what is called the menstrual flow.

For several days a colored liquid composed of blood and dissolved cells passes out through the mouth of the womb, down the vaginal canal, and out through the external opening into the folds of the labia. At the end of four or five days the oozing usually ceases, the surface of the womb lining heals over, and the process commences all over again.

The pattern of menstruation is a very individual matter. Some girls start at ten, others at thirteen or fourteen, and some even later. In some women the flow lasts for three days, in others, for five or six. In some women the cycle covers from twenty-seven to thirty days, in others from twenty-
six to thirty-one. It is a commonplace that most women are "regularly irregular."



Female Sexual Anatomy

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