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the anterior portion of the perineal region containing the openings of the urethra and vagina in the female and the urethra and root structures of the penis in the male.
the triangle in the peritoneum anterior to the imaginary line between the two ischial tuberosities.
The triangle with its base formed by a line between the two ischial tuberosities and its apex just below the symphysis pubis.
See also: triangle