Second Lesson about VAGINA

Vagina

Vagina (from Latin meaning literally "protector" or "shell") or the vulva is a funnel-shaped tube that connects the uterus to the outside of the body in female mammals and marsupilia, or to the cloaca in female birds, monotrem, and several species of reptiles. Insects and several species of invertebrates also have a vagina, which is the final part of oviduct. Vagina is on the mammalian female reproductive organs, like the penis in male mammals.

Vaginal secretions produced various kinds such as sweat, sebum, and secretion from Bartholin and Skene glands at the vulva, endometrial fluid, and oviductal (which changes with the menstrual cycle), cervical mucus, exfoliated cells, and secretions in the vaginal wall itself, which can enhance sexual arousal. Vagina in all women out pyridine, squalene, urea, acetic acid, lactic acid, complex alcohols (including cholesterol), glycol (including propylene glycol), ketones, and aldehyde-aldehyde. But a more detailed chemical acids in spending vagina divide women into two groups. All women produce acetic acid, but it also produces a third of a short series of aliphatic acids. Short circuit aliphatic acids, which include acetic, propionic, isovaleric, isobutryc, propanoic, and butanoic acid. All of these acids is a sharp level of chemicals produced by other primate species as a signal of touch / smell sexual. Although none has ever proved the role of these acids in the rules of human relationships, some researchers consider this a copullins and pheromones in humans.

The vagina is a woman's reproductive organs are highly susceptible to infection. This is due to the limits between the urethra to the anus is very close, so that germs such as fungi, bacteria, parasites, and viruses easily fit into the vagina. Therefore, women should be diligent in caring for personal hygiene this region. Infections also occur because of disruption of ecosystem balance in the vagina. Vaginal ecosystem is a circle of life is influenced by two main elements, namely estrogen and the bacteria Lactobacillus, or good bacteria. Here, estrogen plays a role in determining the content of sugars as energy savings in the cell body (glycogen). Glycogen is the nutrition of Lactobacillus, which will be metabolized to its growth. Metabolism and produce lactic acid, which determines the acid environment in the vagina, with the potential Hydrogen (pH) ranged from 3.8 to 4.2. With this level of acidity, Lactobacillus will be fertile and pathogenic bacteria (bad) will die.

Inside the vagina there are various kinds of bacteria, Lactobacillus 95 percent, 5 percent of pathogens. In a balanced vaginal ecosystem conditions, pathogenic bacteria will not interfere. When balance is disrupted, for example the level of acidity decreases, the natural defense also will fall, and susceptible to infection. Vaginal ecosystem imbalance caused by many factors. Among other oral contraceptives, diabetes mellitus, antibiotic, menstrual blood, semen, spraying liquid into the vagina (douching), and hormonal disorders such as during puberty, pregnancy, or menopause.

Although a variety of sizes vagina in women, but its measurement range of 6 to 7.5 cm (2.5 to 3 inches) covering the anterior wall, and 9 cm (3.5 inches) long to cover the posterior wall. [1] At the time of sexual stimulation, vaginal length and width will be increased. [2] vaginal elasticity can help the process in a sexual relationship, and besides it helps during the birth. [3]

Cunnilingus

Cunnilingus is the act of using the mouth, lips and tongue profit stimulate a woman's genitals. This term comes from the Latin vulva (cunnus) and tongue (lingua).

This behavior, which included oral sex behaviors, risky sexual spread of infectious diseases such as chlamydia infection, human papillomavirus (HPV), gonorrhea, herpes, hepatitis, HIV, sexual and other contagious diseases.

Clitoris

The clitoris is the female sexual organ found at the upper end of the two labia minora (vaginal lips in).

Form

The clitoris consists of a circular area or head, called the glans, and a longer part, called the shaft, which has a basin forms similar to those belonging to the penis. Tissue from the inner lips normally covers the shaft, which form a hood or foreskin to protect it. The only part of the clitoris which can be seen directly is the glans, which looks like small, shiny button. Size and shape vary in every woman. The clitoris can be seen by encouraging the skin to the back of the clitoral sheath. There are so many nerve endings in the clitoris and the surrounding area.

Function

Number of nerve endings in the clitoris makes it very sensitive to touch or pressure directly or indirectly. This is similar to the penis in men. Stimulation of the clitoris can be delicious, even giving the owner of sexual pleasure is the only known function of this organ, and the clitoris is the only human organ that has pleasure as its sole function. It has nothing to do with pregnancy, menstruation, or urinating.
Process aroused clitoris

When a women becomes sexually aroused, the glans and the shaft fill with blood and increase in size. This will double the size of the gland diameter. There is no evidence that a larger clitoris means more intense sexual arousal. As erotic stimulation continues and orgasm approaches, the clitoris becomes less visible as it is covered by the network cover the enlarged clitoris. This enlargement is designed to protect the clitoris from direct contact, which, for some women, may interfere with rather than wear. It moves out again when the stimulation was stopped.

After orgasm the clitoris returns to its normal size within about ten minutes because the orgasm leads to the dissolution of the accumulated blood. If a woman does not have an orgasm, the blood that has flowed into the clitoris as a result of sexual arousal may remain there, causing enlarged clitoris to remain for several hours. Many women find this uncomfortable.

A woman's clitoris can be stimulated through direct or indirect touch. During intercourse the penis does not touch the clitoris directly. Thrusting of the penis into the vagina, regardless of the position used, moves the labia minora, and the movement of the lips clitoris that usually creates the orgasm. Direct contact with the clit by touching with a finger, vibrator, or a tongue can cause discomfort for many women. For this woman, caress or ordinary salt lick on the area around the clitoris is felt more enjoyable. Other women enjoy direct stimulation. There are countless variations of sensitivity to the clitoris, and every woman will find out what feels best