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In mammals, the vulva (pl.: vulvas or vulvae) comprises mostly external, visible structures of the female genitalia leading into the interior of the female reproductive tract.
The vagina within the female genitals. The dimensions and shape of human vaginas are of great importance in medicine and surgery, in addition to their relevance to sexual pleasure and childbirth; there appears to be no one way, however, to characterize the vagina's size and shape. [1]
The cervix (pl.: cervices) or cervix uteri is a dynamic fibromuscular sexual organ of the female reproductive system that connects the vagina with the uterine cavity. [1] The human female cervix has been documented anatomically since at least the time of Hippocrates , over 2,000 years ago.
The hymen is a thin piece of mucosal tissue that surrounds or partially covers the vaginal introitus.A small percentage are born with hymens that are imperforate and completely obstruct the vaginal canal.
When the rounded thicker labia majora are pulled aside, the labia minora are more visible. The labia minora are vertical folds of skin in the very middle of the vulva. The labia are the major externally visible structures of the vulva.
Because of the presence of the cervix in the front wall of the vagina, there is a difference in length between the front wall, approximately 7.5 cm (2.5 to 3 in) long, and the back wall, approximately 9 cm (3.5 in) long. [10] [24] During sexual arousal, the vagina expands both in length and width. If a woman stands upright, the vaginal canal ...
When the fetus has developed enough to survive outside the uterus, the cervix dilates, and contractions of the uterus propel it through the birth canal (the vagina), where it becomes a newborn. The breasts are not part of the reproductive system, but mammary glands were essential to nourishing infants until the modern advent of infant formula.
The internal anatomy of the human vulva, with the clitoral hood and labia minora indicated as lines.. The clitoris is the homolog to the penis in the male. Similarly, the clitoris and its erection can subtly differ in size.