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vagina |
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vagina: see reproductive system reproductive system, in animals, the anatomical organs concerned with production of offspring. In humans and other mammals the female reproductive system produces the female reproductive cells (the eggs, or ova) and contains an organ in which development of the fetus ..... Click the link for more information. . vaginaGenital canal in females. Together with the cavity of the uterus, it forms the birth canal. In most virgins, its external opening is partially closed by a thin fold of tissue (hymen), which has various forms, not all of which significantly obstruct the opening. The vagina's lining thickens and thins during the menstrual cycle (see menstruation) in response to estrogen from the ovaries, being thickest and most elastic during ovulation and pregnancy. Its normally slightly acid environment discourages disease-causing microorganisms. Thick, elastic muscle walls accommodate movement of the penis during intercourse and passage of a child during delivery. A mucuslike fluid seeps through them for lubrication during sexual arousal. Vaginal disorders include bacterial and fungal infections (e.g., sexually transmitted diseases, candida), vaginitis, sores (see ulcer), and prolapse. vagina 1. the moist canal in most female mammals, including humans, that extends from the cervix of the uterus to an external opening between the labia minora 2. Anatomy biology any sheath or sheathlike structure, such as a leaf base that encloses a stem vagina [və′jī·nə] (anatomy) The canal from the vulvar opening to the cervix uteri. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| 1) Compared with their counterparts whose male partners used condoms less than 5% of the time for vaginal intercourse, women whose partners used them at least half the time had a 50% lower risk of infection and women whose partners used them every time had a 70% lower risk. The interview asked about mutual caresses, masturbation of each partner by the other, self-masturbation, fellatio, cunnilingus, man's finger in vagina, vaginal penetration (i. Most screen vaginal and rectal specimens at 34-37 weeks of gestation. |
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