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Pubococcygeus muscle Puborectalis muscle The iliococcygeus arises from the inner side of the ischium (the lower and back part of the hip bone ) and from the posterior part of the tendinous arch of the obturator fascia , and is attached to the coccyx and anococcygeal body ; it is usually thin, and may be absent, or be largely replaced by fibrous ...
The urogenital hiatus is a large midline opening [1] in the anteromedial part of the pelvic floor (more precisely, the pubococcygeal muscle), [2] extending between the pubis (anteriorly), and rectum (posteriorly). Each levator ani muscle forms either lateral border of the hiatus. [1]
The iliococcygeus and pubococcygeus make up the levator ani muscle. The muscles pass behind the rectum. The levator ani surrounds the opening which the urethra, rectum and vagina pass. The pubococcygeus muscle is subdivided into the pubourethralis, pubovaginal muscle and the puborectalis muscle. The names describe the attachments of the muscles ...
Reproducing this type of muscle action can strengthen the Kegel muscles. The action of slowing or stopping the flow of urine may be used as a test of the correct pelvic-floor exercise technique. [11] [12] The components of levator ani (the pelvic diaphragm), namely pubococcygeus, puborectalis and iliococcygeus, contract and relax as one muscle ...
[7] [8] [9] Other muscles that are part of the levator ani are: the pubococcygeus muscle which is made up of the puboperineal, pubovaginal, and puboanal muscles; the puborectal muscle; and the iliococcygeal muscle. [9] [10] The pubovaginal muscle was identified by anatomists as early as 1912. [11]
The coccygeus muscle is posterior to levator ani and anterior to the sacrospinous ligament in the pelvic floor.It is a triangular plane of muscular and tendinous fibers. It arises by its apex from the spine of the ischium and sacrospinous ligament.
Although the pubococcygeus muscle is commonly thought to be the primary muscle involved in vaginismus, Pacik identified two more spastic muscles in people who were treated under sedation. These include the entry muscle (bulbocavernosum) and the mid-vaginal muscle (puborectalis). Spasm of the entry muscle accounts for the common complaint that ...
Vaginal contractions are contractions of the pelvic muscles surrounding the vagina, especially the pubococcygeus muscle. Vaginal contractions are generally an involuntary muscular response to orgasm. Women can control the muscles of the vagina to perform vaginal contractions at will.