bulbospongiosus


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bulbospongiosus

[¦bəl·bō‚spən·jē′ō·səs]
(anatomy)
A muscle encircling the bulb and adjacent proximal parts of the penis in the male, and encircling the orifice of the vagina and covering the lateral parts of the vestibular bulbs in the female. Also known as bulbocavernosus.
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Blood drainage from the penis is done by external pudendal vein and internal pudendal vein and venous blood in deep vein penis, bulbar vein and dorsal penile vein enter to internal pudendal vein and then internal iliac and finally coudal vena cava, and the external pudendal vein blood prepuce, skin, corpus spongiosum penis and ischiocavernosus, bulbospongiosus and retractor muscles and free part penis through dorsal vein drainage (Fig7,8).
Surgical access is traditionally obtained via a longitudinal midline perineal incision over the urethra with subsequent dissection through the bulbospongiosus muscle, although alternative approaches have been employed as well, including the peno-scrotal and retropubic approaches.
Moreover, tissue, including the bulbospongiosus muscle, is left intact over the urethra, serving as a cushion between the urethra and the sling and further minimizing the risk of erosion.