Читать книгу Ridley's The Vulva - Группа авторов - Страница 79

The pubococcygeus arises from the anterior half of the linear origin and from the posterior surface of the body of the pubis. The fibres arising from the fibrous linear origin sweep backwards on the pelvic surface of the iliococcygeus to be inserted into the anococcygeal raphe. Those fibres arising from the pubic bone form a muscle sling around the anorectal junction, producing a forward angulation of this junction. This part of the pubococcygeus is referred to as the puborectalis, and it lies beneath the anococcygeal raphe and intermingles with the deep part of the external anal sphincter. The most medial fibres arising from the pubis form a muscle sling around the vagina (sphincter vaginae) which unite with the perineal body behind the vagina. The midline gap between the medial edges of the sphincter vaginae is occupied by the pubovesical ligaments and the deep dorsal vein of the clitoris.