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I. Orientation of Pelvis

II. Osteology

III. Joints

IV. Ligaments

V. Pelvic Musculature

VI. Perineum

[WebLecture Slide 43 320x240 pixels]

WebLecture Slide 43

The muscles of the superficial perineal space include the superficial transverse perineal muscles (transversus perinei superficialis), the paired bulbospongiosus muscles, and the paired ischiocavernosus muscles. The perineal body receives fibers from muscles in both the deep and superficial groups and was described previously. Transversus perinei superficialis is a small strip of muscle that passes from each ischial tuberosity towards the midline. There it inserts into the perineal body and intermingles with fibers from the contralateral muscle. Bulbospongiosus is a midline muscle that consists of two parts joined by a median raphe. In the male the fibers of the bulbospongiosus surround the bulb of the penis and the corpus spongiosus of the penis. The ischiocavernosus muscles cover the crus of the penis. On each side, the muscle originates from the ischial tuberosity and ramus. 
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