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Uptodate Reference Title
Anatomy posterior vagina
Anatomy posterior vagina
Normal posterior wall support provided by the levator ani muscles holds the vagina closed. With increased abdominal pressure, the pressure on the posterior vaginal wall is equilibrated by pressure on the anterior vaginal wall (upper arrows), and there is no stress on the connective tissue supports. Distally, the pressure transmitted to the rectum is resisted by the perineal body.