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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.
Male urinary meatus Drawing of male internal sexual anatomy. The male external urethral orifice is the external opening of the urethra, normally located at the tip of the glans penis, [1] at its junction with the frenular delta.
In the human female, the urethra is about 4 cm long, [10] [12] having 6 mm diameter, [12] 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.
Infection (called skenitis, urethral syndrome, or female prostatitis) [12] Skene's duct cyst: lined by stratified squamous epithelium, the cyst is caused by obstruction of the Skene's glands. It is located lateral to the urinary meatus. Magnetic resonance imaging (MRI) is used for diagnosis. [13]
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. For humans, it includes the mons pubis , labia majora , labia minora , clitoris , vestibule , urinary meatus , vaginal introitus , hymen , and openings of the vestibular ...
the internal auditory meatus, a canal in the temporal bone of the skull; the urinary meatus, which is the opening of the urethra, situated on the glans penis in males and in the vulval vestibule in females; one of three nasal meatuses: the superior meatus, middle meatus and inferior meatus; each are passages through the nasal cavity within the ...
For females, the mons pubis forms the anterior and superior portion of the vulva.It divides into the labia majora (literally "larger lips"), on either side of the furrow known as the pudendal cleft that surrounds the rest of the vulvar parts: labia minora, clitoris, urinary meatus, vaginal opening, and vulval vestibule.
The muscle helps maintain continence of urine along with the internal urethral sphincter which is under control of the autonomic nervous system.The external sphincter muscle prevents urine leakage as the muscle is tonically contracted via somatic fibers that originate in Onuf's nucleus and pass through sacral spinal nerves S2-S4 then the pudendal nerve to synapse on the muscle.