Perineal body

The perineal body is not a structure but an aggregation of fibromuscular tissue present in the midline at the junction between the anal and urogenital triangle, just ventral to the anal sphincter. It attaches to various muscles in the pelvis:

  • Anterior - superficial and deep transverse perinei, bulbospongiosus
  • Posterior - external anal sphincter 
  • Superior - puborectalis, pubovaginalis and the rectovaginal septum

It is continuous with the perineal membrane and the superficial perineal fascia. In males, it continues as the perineal raphe, and in females, it is attached to the posterior commissure and the introitus.

The following image shows the perineal body and its muscular attachments.




Ten muscles of the perineum converge and interlace in the perineal body.



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