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Structures opening in the vulval vestibule are the urethra (urinary meatus), vagina, Bartholin's glands, and Skene's glands. [1]The external urethral orifice is placed about 25–30 millimetres (1–1.2 in) [2] behind the clitoris and immediately in front of that of the vagina; it usually assumes the form of a short, sagittal cleft with slightly raised margins.
In most other placentals, the urethra and vagina join as an internal vestibule (urogenital sinus), hence both urine and offspring exit through an orifice called the vulvar opening. [194] [195] [196] During estrus, the clitoris of a mare (female horse) everts as the labia contracts by opening and closing. This is colloquially known as "winking ...
In the human female, the urethra is about 4 cm long, [9] [11] having 6 mm diameter, [11] and exits the body between the clitoris and the vaginal opening, extending from the internal to the external urethral orifice. The meatus is located below the clitoris.
The human vagina is an elastic, muscular canal that extends from the vulva to the cervix. [9][10] The opening of the vagina lies in the urogenital triangle. The urogenital triangle is the front triangle of the perineum and also consists of the urethral opening and associated parts of the external genitalia. [11]
The female reproductive tract is made of several connected internal sex organs—the vagina, uterus, and fallopian tubes —and is prone to infections. [1] The vagina allows for sexual intercourse, and is connected to the uterus at the cervix. The uterus (or womb) accommodates the embryo by developing the uterine lining.
The female spotted hyenas urinate, copulate and give birth through the clitoris since the urethra and vagina exit through the clitoral glans. [209] [206] [222] [225] This trait makes mating more laborious for the male than in other mammals, and also makes attempts to sexually coerce (physically force sexual activity on) females futile. [221]
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. In humans and other primates, there are two pairs of labia: the labia majora (outer lips) are large and thick folds of skin that cover the vulva's other parts, while the labia minora (inner lips) are ...
Urinary meatus. The urinary meatus[a] (/ miːˈeɪtəs /, mee-AY-təs; pl.: meatus or meatuses), also known as the external urethral orifice, is the opening of the urethra where urine exits the penis or vulva during urination. It is where semen exits the penis during ejaculation. The meatus has varying degrees of sensitivity to touch.