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Gross Anatomy - Pelvic Diaphragm
- Forms the pelvic floor and supports all of the pelvic viscera.
- Is formed by the levator ani and coccygeus muscles and their fascial coverings.
- Lies posterior and deep to the urogenital diaphragm and medial and deep to the ischiorectal fossa.
- On contraction, raises the entire pelvic floor.
- Flexes the anorectal canal during defecation and helps the voluntary control of micturition.
- Helps direct the fetal head toward the birth canal at parturition.
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, Apr 25 2011, 9:35 AM EDT
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