The internal female genitalia compose the feminine reproductive system. It is composed of the following: vagina, uterus, Fallopian tubes and ovaries.
The vagina is a channel linking the outer part of the female genitalia with the cervix, which is in fact a "passage" to the uterus. This latter communicates with the two ovaries through the Fallopian tubes.
At intervals of about one month, one of the two ovaries releases an ovule, which is immediately caught by the pavilion of the corresponding Fallopian tube. Fertilized or not, the ovule moves inside the tube in order to get inside the uterus. The uterus is the place of gestation; it receives the fertilized ovule to grow there.
The vagina is a highly elastic channel, whose length varies between 8 and 12 cm and width of approximately 2,5 cm. It has the capacity of growing in length (up to several centimeters) and in width (double) during sexual arousal.
During labor, the entrance to the vagina is considerably wide, usually reaching 10 centimeters dilatations. The vagina is partly covered by the hymen in the case of virgin girls.
When the woman is standing, the vagina does not have a vertical position. It is inclined in its upper part. Its exact location is between the urinary bladder and rectum. The vaginal wall has folds and does not contain any glands.
The internal vaginal lining is highly sensitive to ovarian hormones and its superficial cells are loose. The study of these cells allows the detection of the vaginal or cervical cancer. The structure of the internal mucous lining varies according to the age, and period.
An adult woman usually presents a vaginal "content", white and unctuous, made of a liquid part (intact and altered cells), as well as different bacteria, which together compose the vaginal flora. These elements help in preserving the acidity needed inside the vagina for preventing the appearance of different pathogenic germs. The main cause of this beneficial acidity is the lactic acid.
The role of the vagina
During intercourse, the vagina is the "receiver" of the penis, and consequently, the receiver of the seed. During birth, it has a dilatation of 5 to 6 times greater in order to allow the baby to come out.
The uterus is a compact muscle, shaped as a reversed pear. Its size is 6-8 cm height and 3-4 cm width, but during pregnancy the uterus suffers great changes. For instance, its height in the ninth month of pregnancy is about 30 cm! It is placed at the extremity of the vagina and normally it is inclined over the urinary bladder.
During the period, it easily changes its position. Supple ligaments that grant it a degree of flexibility, and in the same time do not let it go down in the vagina sustain the uterus. On each side of the back of the uterus, there are the Fallopian tubes.
The uterine muscle is coated in a mucous named endometrium. This mucous, rich in blood vessels and glands, is the receiver of the ovule and suffers important modifications, according to the period and age of each woman. When the ovule is not fecundated, this mucous substance and the ovule are discharged.
The uterus is at its base closed by the cervix, a tight and tough portion of approximately 3 cm. You may feel this place with your fingers, in the back of the vagina.
A fine channel traverses the middle of the cervix, and thus the uterus communicates with the vagina. Through this channel, the menstrual blood is discharged and the sperm passes through the uterus, heading for the tubes, the place of fecundation. The cervix has an opening in the middle, round-shaped in the case of women who never had children and a little larger and transversally stretched in the case of women who had children.
The role of the uterus
The uterus is a fundamental element in almost all stages of the reproduction process, beginning with the ascension of the sperm through the vagina into the uterus, continuing with the fetus and the forming of the placenta, up to the uterine contractions that push the baby outside.
THE FALLOPIAN TUBES
They are two small, flexible tubes, approximately 10-12 cm long, whose internal diameter is a little bigger than that of a hair. They start at each end of upper part of the uterus and end at the level of the ovaries, in an auricle with mobile fringes.
The role of the tubes
The Fallopian tubes collect the ovule with the fringes of the auricle. They also allow the sperm to pass to the place of fecundation, and ensure the survival and the transport of the embryo towards the uterus.
The ovaries are two glands sized as two big almonds, that is 4-cm long and 2,5 cm wide. They are situated on the right and left side of the uterus, connected to it through a thin ligament. Another ligament connects them to the tubes.
At her birth, a girl usually has a reserve of approximately 700.000 to 2.000.000 ovules, most of which degenerate during childhood, reaching the number of 300.000-400.000. Of this number, only 300-400 ovules reach maturity.
This goes on for about 30 years (the fecundity rate of a woman, about 13 a year, at 28 days distance. The others will degenerate over the years, until the menopause, when none of them are left.
Consequently, the activity of the ovaries is not unlimited, as it starts at puberty and ends at menopause. The ovules are enclosed in a sort of cell-conglomerate, which reaches maturity within a period, due to the effect of the hormones secreted by the hypophysis. Their name is follicles. Once in 28 days, a mature follicle opens up and releases an ovule.
We need to make a note here: the women practicing the tantric love as well as yoga techniques transmute their sexual potential energy (we make reference at the ovules) is no longer wasted, but transmuted and the energy resulting from its transmutation is sublimated to the upper centers of force. Such women will be beautiful, young looking and full of vitality even at old ages.
The role of the ovaries: the production of ovules, which are the reproductive feminine cells. They also secrete female sexual hormones - estrogen and progesterone - indispensable to the natural course of the period, pregnancy and to the good function of the genitalia.