Inside vagina

Sex organs (genitalia) are divided into:
Usually genitals are divided into internal and external. For external genital organs in women include the threshold of the vagina, clitoris and labia, men – penis and scrotum. The division of reproductive organs to internal and external due not only to the difference in their location (internal organs are located in the pelvis, and external – outside), but the difference in their functions. Testes ensure the development of eggs from women and sperm in men, and exterior are erogenous zones. Ovaries – gonads (gonads) were women. This doubles Body flattened oval, 3-4 cm long, 2-2,5 cm in width, thickness 1-1,5 cm, weighing 5.8 g. In ovarian surface is smooth, then becomes hilly, covered with scars. In the period of menopause, the ovaries become more dense, shrivel and shrink. The ovaries are covered with shells. Internal, cortical layer consists of fine-fibered ovarian stroma and follicles at different stages of maturation. When the full maturation of the follicle bursts, the egg with the liquid goes into the abdominal cavity. This is called ovulation. Then the egg falls into the abdominal opening of the uterine (fallopian) tube. Cavity is the bursting of the follicle is filled with blood and becomes a corpus luteum of menstruation. If fertilization does not occur, then for 2-3 days before menstruation yellow body turns into a white body. If fertilization occurs, the corpus luteum of pregnancy forms. By the time of birth the ovaries contain from several hundred thousand to two million follicles at the early stage of maturation. By the period of puberty is around 36 thousand follicles. After puberty, under the influence of pituitary hormones monthly mature follicles 300-400. But all in all the time until she is able to bear , from her puberty to menopause (around 30-35 years old), about 400 mature follicles. In addition to the production of eggs, the ovaries produce sex hormones – estrogen, progesterone and androgens. Production of estrogens (female hormones) begins in the intrauterine period. During puberty the ovaries appear maturing follicles, maintains a constant level of estrogen, thus forming secondary sexual characteristics of feminine type (increased mammary glands, body hair appears on the pubic hair and armpits), there are menstruating, drawn figure, shaped the psyche and sexual behavior . From the beginning of menstruation until their climax in the end (menopause), along with a constant output (secretion) of estrogen occur rhythmically, the monthly peaks of estrogenic saturation, consistent with rupture of the mature follicle and release of ability to fertilize an egg. Corpus luteum – a temporary endocrine gland, exists as long as there is hope for fertilization. It secretes the hormone progesterone, prepares the uterus for implantation of the egg. If pregnancy occurs, then within 2-3 months ovaries perform the function for the development of the pregnancy, and then it goes to the placenta. Oviduct (uterine, fallopian tubes) – twin tube length of 10-12 cm, starting in the upper corners of the uterus and ending with funnel-shaped extension with a fringe like covering the ovary. They are designed to capture the egg, published their ovaries into the abdominal cavity after rupture of the follicle. The inner surface of the fallopian tubes covered with folds and has a so-called cilia that help move the egg to the uterus.
Ovaries with tubes called appendages. As  much convoluted tube. If a woman’s genitals are underdeveloped (infantile), then twisting pipes is for life, making it difficult to fertilization. If there is inflammation of the appendages, with time spikes occur, the inner lumen of the fallopian tubes can be narrowed or completely zarasti. Then the egg can’t reach the uterus and “stuck” in the pipe. If the lumen tube is not fully closed adhesions, the sperm after intercourse can penetrate from the uterus into the tube, and fertilization occurs in the tube. This is called a tubal or ectopic pregnancy. In this case, as in general during pregnancy, regardless of where the introduction of a fertilized egg, a woman has stopped menstruating, and she may think it normal, that is, a uterine pregnancy, because at first no ill effects, it does not feel. The fertilized egg grows in the tube, which is absolutely not suited for this, stretches its walls. It may be mild pain, and may not be a pain. Then, when the egg is too large, there is a sudden pipe rupture and bleeding into the abdominal cavity. She feels it as a sharp pain in the abdomen. This condition is life-threatening and requires immediate surgery. Ectopic pregnancy can occur and the long, convoluted (infantile) tubes. In this case the egg is like “no time” to reach the uterus, and fertilization can occur in the pipe. After the break the pipe she was unable to carry the egg to the uterus. If the second pipe is a woman does not have adhesions, it is possible fertilization. But if inflammation of the appendages and two-sided adhesive process, then the woman may be a second ectopic pregnancy. In these cases, women want plastic – surgery, when the ovaries, as it were attached to the corners of the uterus, and in this case, the pregnancy can occur. That is why it is so important for women to take care of their appendages, carefully protect themselves from unwanted pregnancies and prevent abortions, inflammation of the appendages and treated in time, if would still be an acute inflammation of the appendages, that it was not transferred to the chronic form of adhesive process and the threat of an ectopic pregnancy. Even if the woman already has ass, and she no longer wants to have it, appendages must necessarily take care of and treated to prevent an ectopic pregnancy and the risk to life and the need for surgery. Uterus – a hollow muscular organ of a pear-shaped, compressed in anteroposterior direction, weighing from 30 to 100 g. In her distinguished body, neck and isthmus. If the genitals are underdeveloped (infantile), this ratio can be preserved and a woman, or the uterus is slightly increased in size, but still does not reach normal size. This uterus is infantile. In addition to the infantile, perhaps gipoplastichnaya uterus, where it is smaller in size than normal, but the ratio between the length of its body and long neck right. Normally the vertical position of a woman’s body rejected the uterus forward and upward, vaginal portion facing down and backwards. This is called antefleksio. Uterine cavity has a triangular shape. In the upper corners of the uterus is the uterine openings, which communicate with the uterine tube openings. The mucous membrane of the uterus (endometrium) is smooth, it is constantly changing in relation to the menstrual cycle. The functional layer of endometrium is torn away during menstruation. Endometrial glands emit a small amount of alkaline secretion, dampening the uterine cavity. The main function of the uterus – serve as a receptacle for the developing fetus. In addition, allocates uterine secret. In the cervix is the cervical canal, which communicates with the vagina. As it pours menstrual blood and sperm enter the uterus after intercourse. Glands cervical canal emit alkaline secret in the form of a glassy viscous mucus, which forms a mucous plug. In the external part of the neck, facing into the vagina, is located outside the uterine pharynx. In nulliparous women uterine pharynx is oval in shape, from giving birth – the form of cracks. Between the neck and body of the uterus is the isthmus, corresponding to internal zevu uterus. This is the bottleneck in the uterus.
The length of the vagina from 6 to 11 cm, the front wall of 1,5 – 2 cm shorter than the rear. The width of the vagina can be from 2 to 5 cm on average, the width of the vagina 2-3 cm from the large stretch of the vagina length and breadth of its variable. Around the neck is formed annular deepening – vaults vagina – two side, front and deepest – rear. Area codes – the widest part of the vagina. In the stretched vaginal lumen is a form of cone base facing upwards, and the tip – down. Front and rear surface of the vagina in contact with each other, and the walls of sets – the cervix. Lumen of the vagina in the cross section has the form of slits, resembling the letter “N”.
The walls of the vagina consist of three layers. The inner layer – the mucous membrane on the front and rear surfaces which act transverse folds, forming two longitudinal ridge. The front roller is more pronounced rear, and a virgin is very dense. With age wrinkles are smoothed out even for virgins. Moisturize vagina occurs due to the vessels of the mucosa and secretions of uterine and cervical glands. Vaginal content has an acid reaction due to lactic acid. The acidity of the vagina varies during the menstrual cycle. Alkaline reaction of the vagina is for girls, with genital infantilism and in very old women.
Over the mucosa is the tunica muscularis of the vagina, consisting of three layers of muscle fibers. Interweaving muscle fibers resembles the structure of the basket. This provides the opportunity to adapt and vagina to the penis during intercourse, and to leave. Muscles can stretch, grow and strain. Outer layer – connective tissue membrane of the vagina, is richly supplied with elastic fibers and nerves.
At the outer end of the vagina is the entrance of the vagina, a closed hymen (virgin) or its remnants (in women, sexually active). Log into the vagina in nulliparous women, and especially a virgin, is this elastic ring of muscle and elastic fibers. Women who train these muscles, they can arbitrarily strain and relax during sexual intercourse, which allows tightly cover the penis and how to compress it, strongly narrowing the lumen of the entrance of the vagina, which causes additional stimulation of the penis of men and causes strong passionate feelings. These muscles are spasmodically decline, for example, with the fear of women before intercourse or before defloration, and then the man can‘t enter the penis into the vagina. This disorder is called vaginismus.

Front of the vagina are the bladder and the urethra, behind – the rectum.
The functions of the vagina are:

1. However vulva (external genitals) it is a copulative (sovokupitelnym) body of a woman.
2. It is a receptacle for semen, which is poured out during intercourse in the posterior fornix of the vagina, and then the cervical canal enters the uterus.
3. Participates in the process of ass.
4. Is the excretory organ – stands menstrual blood, the secret of uterine and cervical glands.
5. A barrier to the penetration of germs into the uterus due to its acidic environment.
The boundary between the internal and external genitalia is the hymen (hymen) – the membrane covering the virgin entrance of the vagina. It has a different shape – ring-shaped, crescent, funnel-shaped, gubovidnuyu, petal, toothed. Has two or more holes or do not have holes. Hymen is rich in nerves, therefore, very sensitive, and when defloration (breaking) can be painful – from mild to severe.
At first sexual intercourse hymen is broken, usually behind the right and left of the midline. Depending on the elasticity of the hymen can be deep discontinuities, accompanied by excessive bleeding, or superficial, with little bleeding. Sometimes, if the chaff is very elastic, it is not broken, not only after the first sexual intercourse, but also for subsequent ones. Sometimes it is so stretched, that is not broken even at birth. After defloration are so-called gimenalnye papillae, and after ass- mirtovidnye papillae. Of vestibule – playground, bounded above the hymen, the sides – small sex lips, clitoris, front and rear – the back spike labia. The surface of the vestibule of the vagina is moistened by secretions of small vestibular glands scattered over the entire surface, and large vestibular glands (Bartholin glands) located in the posterior third of the arches in the thickness of the labia majora and the opening in the groove between the small lips sex and virginity, on the border between posterior and middle third of the arches. Midway between the clitoris and the entrance of the vagina (1-3 cm from the clitoris) is opening the urethra (the urethra).

Clitoris (or clitoris) is analogous to a rudimentary penis. During puberty clitoris increases under the action of androgens (male sex hormones), produced by the ovaries, and reaches the maximum development after 25 years. Its dimensions are different – from the match heads to the big toe, depending on the saturation of androgens. Located between the legs clitoris labia minora so that only his head visible, serving as a tubercle. Clitoris consists of two cavernous bodies (similar to the male corpus cavernosum of the penis), which in the form of legs clitoris length of 4 cm and 1 cm in width starting from lonnoy bones come together under the heart and form the body of the clitoris, which has a curved cylindrical shape and ending outside the head. The head of the clitoris top and sides covered with a leathery folds – the foreskin. Beneath the clitoris has its bridle. Outside the clitoris is covered with soft skin, rich in sebaceous glands, which secret accumulates around the clitoris and in the groove between the large and small sex lips. Clitoris, as head of the penis, has a lot of nerves and nerve endings (Pacinian corpuscles, Meissner, Krause, Dogiel), and therefore considered the primary erogenous zone for most women. Most women have small lips reached only to the rear entrance of the vagina. In front of each small sex lip is split into two legs – front and rear. Fore, merging together to form the foreskin of the clitoris, while the rear – his bridle. Front, the most developed part of the labia minora in favor of the genital slit and is visible between the labia lips, even virgins. Development of the labia minora are influenced by hormones of the pituitary and ovary, and their degree of development depends on the level of hormones. Virgin labia were pink, in women who have sex a few times – slightly pink, in women with high sexual experience – with brown pigmentation, pregnant – cyanotic. At blondes small lips slightly pigmented. Their uneven or excessive development may be that girls and women masturbating intensively, but it is not strictly necessary. Labia majora are two longitudinal parallel folds of skin 7-8 cm in length, which lie outside of the labia minora, and limiting sex slit. In girls, they are still undeveloped.