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urogenital diaphragm in Medicine

urogenital diaphragm

n.
  1. A triangular sheet of muscle between the ischiopubic rami, composed of the sphincter muscle of the urethra and the deep transverse muscles of the perineum.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.