The hidden natural defense line of female reproductive tract must go through five physiological periods in her life.

Women's private parts are easily invaded by bacteria, but women's vulva, vagina, uterus and other vulnerable places, but there are two natural lines of defense, can better prevent the invasion of inflammation. Let's explain in detail these two natural lines of defense of women one by one.
The first line: anatomical defense line
There are five levels in a woman's anatomical defense line from the outside to the inside, while the scope of women's Yin often involves the first and second hurdles. The first level is the vulva. Four pieces of labia close left and right, but the vaginal wall is fastened back and forth, double insurance. It also has some protective effect on unbroken hymen. When standing and sitting, the vagina is high on the inside and low on the outside, and it won't irrigate or store water. British scientists have done scientific experiments with litmus reagents: even pregnant women do not get water from the vagina during a basin bath. For women's pubic hair, pubic caruncle, they protect the vaginal orifice like eyebrows and eyelashes, so many female friends who like shaving pubic hair had better let nature take its course.
The second hurdle is in the vagina. Due to the role of the pelvic floor muscles, the front and back wall of the vagina is close, and the vaginal orifice is closed, which can prevent external pollution. For women who give birth to children, the vagina is more relaxed, the defense function has declined.
The second line: physiological line of defense.
Women's vaginal epithelial cells, on the one hand, continue to metabolize, proliferate and thicken under the influence of estrogen, increasing their resistance to pathogens. On the other hand, vagina has self-purification effect. The vagina is usually acidic, the pH is about 5, and the pregnancy period can reach 4. Under the action of vaginal bacilli, the glycogen rich in vaginal epithelial cells can be decomposed into lactic acid to maintain the normal acidic environment of the vagina and inhibit the pathogens suitable for reproduction in the weak alkali environment. Therefore, do not rinse regularly with water, otherwise these beneficial lactic acid will be washed away. It is alkaline for blood, semen, cervical mucus, gray manganese oxygen and so on, which will neutralize and destroy the acidic environment. In addition, we should also be careful not to misuse some drugs to destroy the vaginal acid-base balance.
A woman must go through five physiological periods in her life.
Infancy
It is infancy from birth to about 12 years old. Due to the influence of maternal estrogen, baby girls may have swollen breasts or a little lactation, and even a small amount of vaginal bleeding. These physiological phenomena will disappear on their own within a few days.
In the early stage of childhood, the genitals are infantile, and the uterus, ovaries and fallopian tubes are all located in the abdominal cavity. About 8 years old, the uterus, ovaries, fallopian tubes gradually decline into the pelvis, follicles have a certain development, and secrete a small amount of estrogen, but can not reach the mature stage, breasts and other female characteristics gradually appear.
Puberty
Puberty usually ranges from 10 to 19 years old, and menarche is a sign of puberty. At this stage rabbit vibrator , the physical growth of women accelerates, the intelligence also develops by leaps and bounds, the reproductive system gradually tends to mature, and the secondary sexual characteristics of women appear. Follicles in the ovary develop and mature gradually, but it usually takes 2-4 years to establish periodic ovulation and form a regular menstrual cycle.
At this stage, the most obvious physiological characteristics of women are as follows: the body grows tall, the physical development is mature, and the body gradually develops into a unique female figure; the development of internal and external reproductive organs gradually matures, and the secondary sexual characteristics develop, and presents a unique female posture; at this stage, although the function of the whole reproductive system of women is not yet perfect, it already has fertility.
Mature stage
This stage, also known as the reproductive period dildo shop , begins at the age of 18 and lasts for about 30 years. At this stage, the reproductive function of women changes from maturity to exuberance, and then gradually from exuberance to decline in the later stage. in the period of sexual maturity, various physiological manifestations of women are mature best ass , showing periodic ovulation and menstruation. It is also the period when the function of female reproductive organs is the most exuberant. Many women are at this stage to complete the necessary process of marriage and childbearing.
Menopause
Medically known as "peri-menopausal period", it is a transitional period in which the ovarian function of women gradually declines before and after menopause, until it completely disappears. This period includes three stages: premenopause, menopause and postmenopause.
It starts at the age of about 40 and lasts for 10-20 years. The main manifestations are menstrual disorder and menopause, about 20% of women can not adapt to the sharp decline of ovarian function, and autonomic nerve dysfunction, resulting in peri-menopausal syndrome. During this period, the female kidney qi gradually deficiency, reproductive organs and breasts also gradually atrophied.
Old age
Old age generally refers to women after the age of 60, which is the period of gradual aging of women's body g spot vibrator , characterized by the cessation of menstruation and atrophy of reproductive organs. At the same time, female kidney qi deficiency, prone to obesity, osteoporosis and other signs of metabolic disorders, heart and brain function also decline, the whole body function is in a period of decline.
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