Vagina human

In mammals , the vagina is the elastic, muscular part of the female genital tract. In humans, it extends from the vulva to the cervix. The outer vaginal opening is normally partly covered by a membrane called the hymen. At the deep end, the cervix neck of the uterus bulges into the vagina.
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Vaginas 101

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The development of the human vagina

Vagina , canal in female mammals that receives the male reproductive cells, or sperm , and is part of the birth canal during the birth process. In humans, it also functions as an excretory canal for the products of menstruation. In humans the vagina is about 9 cm 3. The upper region of the vagina connects to the cervix of the uterus. The vaginal channel is narrowest at the upper and lower ends. In most virgins, the external opening to the vagina is partially closed by a thin fold of tissue known as the hymen. The opening vaginal orifice is partially covered by the labia majora.
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Vagina Overview

By Sabine Walter, Pierre A. What makes women different from men is that much of our sexual apparatus is on the inside — most notably, the vagina. The vagina itself is a hollow, muscular tube that extends from the external opening at the vestibule all the way to the cervix. The walls of the vagina have several layers: the mucosa, which secretes various fluids; a muscular layer; and connective tissue.
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Just as women can have different sized breasts, hands, and feet, the size and depth of vaginas can also vary. According to one study, the average depth of a vagina is about 3. Other sources suggest that the average range of size may be about 3 to 7 inches approximately 7.
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