The structure of the vagina

The vagina (vagina) is the internal sexual organ of a woman, which is presented in the form of an elastic muscular tube, localized between the vulva and the cervix of the uterus. The internal structure of the vagina is represented by the mucosa, which is lined with multilayered flat epithelium. The middle layer of the body consists of smooth muscles. In the upper part of the vagina, the muscles pass into the myometrium. The musculature of the lower part of the vagina is stronger and weaves into the muscles of the perineum. Outside this genital organ is covered with adventitia. The vagina has a folded structure, that is, its walls touch one another. Given the structure of the vagina, this body can easily change its size during sexual intercourse and the birth of a child. In the process of delivery, the vagina can expand to 100-120 mm in diameter, with an average length of 80 to 120 mm and a width of 20 to 30 mm.

The lower part of the vagina opens on the threshold, which the virgins have closed with a hymen (hymen). So far, the physiological significance of this hymen is not known. Virtually all peoples consider it a testament to virginity. It should be said that it is of different shapes and sizes, so reliable evidence of virginity is not. The hymen is very thin, so it is easy to damage it with strenuous exercise (riding, running), masturbation or the introduction of tampons.

In the process of growth and development the structure of the female vagina undergoes some changes. In small girls, it is significantly less than in older women. Female steroid hormones (estrogens), which are synthesized in the ovaries, affect the structure of the vagina. The thickness of the walls of this organ in women who are in childbearing age is much higher than in women during menopause. It should be noted that not only the structure of the vagina changes, but also its biochemical composition. So, for example, during the childbearing period of a woman's life, the vaginal discharge is slightly acidic. An acid medium prevents the propagation of pathogenic microorganisms. However, before puberty and during menopause, the environment in the vagina has a slightly alkaline reaction, and this, as is known, can provoke the multiplication of bacteria and cause atrophic vaginitis.

Vaginal secret is synthesized in the cervical canal, as well as Bartholin glands, white with a specific characteristic odor. During the period of sexual intercourse, the secret can seep through the vaginal epithelium into the vaginal canal. Vaginal discharge in small quantities is normal for all the fair sex. Hyper secretion is observed during sexual arousal and ovulation. Abundant discharge indicates the presence of inflammatory processes in this organ. The process of secretion is regulated by hormones. During the menopause, the level of estrogens in the blood is significantly reduced, while the dryness of the mucous membrane of the vagina, as well as pain during sexual intercourse.

In the upper part of the vagina is the cervix, which has a peculiar opening, which is covered by a mucous cervical stopper. The structure of the vagina has a characteristic feature in innervation. This body has a small number of nerve endings, so it is not the main erogenous zone of a woman.

Recently, many experts have argued that the so-called point G, responsible for the fullness of orgasm, is localized in the vagina. Scientific studies have shown that on the walls of the vagina (at a depth of 2-3 cm) there is a characteristic area with a diameter of about 1 cm. Stimulation of this site gives women a lot of pleasant sensations.