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I. Orientation of Pelvis |
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WebLecture Slide 41 |
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The main view in this slide is from an inferior perspective. A lateral view is shown in the upper right corner. The schematic in the lower right represents the layers of the UG diaphragm: a thin muscular layer surrounded by layers of superior and inferior fascia. The named muscles of the deep perineal space include
the deep transverse perineal muscle (transversus perinei profundus) and
the sphincter urethra muscle. The sphincter urethra muscle surrounds the
membranous urethra at the level of the deep perineal space and the neck
of the bladder. In the male, central fibers continue into the prostate.
The deep transverse perineal muscles take their origin from the ischial
rami and cross laterally just anterior to the anus to join the muscle of
the other side. The deep dorsal nerve and vein of the clitoris (in females,
of the penis in males) are transmitted thourgh the UG diaphragm at the
transverse perineal ligament.
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