HENNING DALHOFF / SCIENCE PHOTO LIBRARY HENNING DALHOFF / SCIENCE PHOTO LIBRARY
Female pelvic floor. Computer artwork of the female pelvic floor muscles seen from below. The muscles maintain continence as part of the urinary and anal sphincters. At centre top is the clitoris, with the urethra, vagina and rectum below it. Surrounding them is the bulbospongiosus muscle, which closes the vagina. Inside of this muscle is the external anal sphincter, which controls the anal opening. Either side of the anus are the levator ani, which support the pelvic organs and surrounds the anus and vagina. Running across centre is the deep transverse perineal muscle, which also supports the pelvic organs.
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