150 - Anatomical Description of Bulbospongiosus Fibers for Control of the Phallus Position in Female

Poster Board Number: 150
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Abstract Body : In the literature the physiological and anatomical processes of female erection and orgasm is not well documented. For example, it is well understood that erection is required for male orgasm and that during ejaculation, the male bulbospongiosus muscle contracts as part of the antegrade expulsion of semen. In females the process of erection is still required prior to orgasm, which is also experienced through the contraction of the bulbospongiosus muscle, innervated by the perineal branch of the pudendal nerve. However, the general anatomy of the female bulbospongiosus muscle is not currently described. Through gross dissection of the female urogenital triangle in human cadaver donors at Midwestern University, we have approached the bulbospongiosus by removing the dermal layer and superficial (Colle’s) perineal fascia. We observed that the female bulbospongiosus muscle lies deep to both the superficial and deep perineal fascias, surrounding both the vaginal and anal orifices, and does not attach to the perineal body. In addition we observed fibers extending from the bulbospongiosus muscle that extend anteriorly and surround the suspensory ligament and body of the clitoris. We believe that the implication of this anatomy shows the equivalence between the male and female bulbospongiosus muscles. Upon orgasm the muscle fibers of the female bulbospongiosus will contract and these tendinous fibers will pull the suspensory ligament and subsequently the glans and body of the clitorus posteriorly.