====== PERINEUM ======



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  * PERINEUM
    * Female external genitalia
    * Male external genitalia
    * Perineal raphe
      * Perineal muscles
        * Muscle of anal triangle
        * External anal sphincter
      * Muscles of urogenital triangle
    * Perineal body
    * Anococcygeal body; anococcygeal ligament
    * Subcutaneous tissue of perineum
      * Membranous layer
    * Subcutaneous perineal pouch [[Collesi]]
    * Superficial perineal pouch; superficial perineal compartment; superficial perineal space
      * Perineal fascia; superficial investing fascia of perineum; deep perineal fascia
      * Superficial transverse perineal muscle
      * Ischiocavernosus
      * Bulbospongiosus
    * Deep perineal pouch; deep perineal space
      * Perineal membrane
        * Transverse perineal ligament
      * Deep transverse perineal muscle
      * External urethral sphincter
      * External urethral sphincter
      * Compressor urethrae
      * Sphincter urethrovaginalis
      * Ischio-anal fossa
      * Fat body of ischio-anal fossa
      * Pudendal canal [[Alcocki]]


  * Perineal body
    * central point of perineum
      * 10 muscles of perineum converge and interlace in perineal body
        * 2 unpaired
           * external anal spinchter
           * fibres of longitudinal muscle coat of anal canal
        * paired
           * bulbospongiosus
           * superficial and deep transverse perinei
           * levator ani
        * unstriped fibres of longitudinal muscle coat of anal canal
  * external anal spinchter
      * anal canal is surrounded in its upper 3/4 by internal anal spinchter
      * external anal spinchter surrounds whole length
      * supplied by inferior rectal nerve
      * perineal branch of 4 th sacral nerve



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