The outer region of the vagina extends to the cervix, the region which receives the name fornix of

The vagina is a canal which is part of the mammalian female organ, part of the reproductive tract that extends from the uterine cervix into the vulva. There are two glands at each side of the vaginal opening called Bartholin's gland, responsible for secretion of mucus a lubricant at the time of intercourse.
The outer region of the vagina extends to the cervix, the region which receives the name fornix of the vagina. The boundary between the vagina and the vulva originates the hymen, located in the anterior portion of the vaginal canal, in women who have never had sexual intercourse, and only a trace in women who are past relationship.
Histologically, the vaginal wall consists of three layers: mucous, muscular and adventitia. The epithelium of the vaginal mucosa of an adult woman is stratified and has a thickness of 150-200 micrometers. Your cells can contain html import small amount of queratoialina, but does not occur with intense keratinization transformation of cells in keratin plates, as in the typical keratinized epithelia. When subjected to the estrogen stimulation of the vaginal epithelium produces and accumulates a large amount of glycogen which is deposited in the vaginal lumen when the epithelial cells of this organ slough. Bacteria present in the vagina glycogen metabolize and produce lactic acid, responsible for the vaginal pH, which is usually low. The acidic environment provides html import protective action against some pathogenic microorganisms.
The own vaginal mucosa blade is made up of loose connective tissue rich in elastic fibers. Among cells in the lamina propria relatively large amounts of lymphocytes and neutrophils. During certain stages html import of the menstrual cycle, these two types of leukocytes invading the epithelium and pass into the lumen of the vagina.
Externally the muscle layer, a layer of dense connective tissue, adventitious, rich in thick elastic fibers, joins the vagina to surrounding tissues. The great elasticity of the vagina is due to the large number of elastic fibers in the connective tissue of your wall. In this tissue are present an extensive venous plexus nerve bundles and nerve cell groups.
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