#urethra  duct through which urine is discharged in most mammals and which serves as the male genital duct
  supertype:  duct__canal__channel  a bodily passage or tube conveying a secretion or other substance
  part of:  urogenital_system  urinary_tract  vulva  penis
  part:  urethral_orifice__external_orifice  the orifice through which urine is discharged
  part:  urethral_sphincter__musculus_sphincter_urethrae  a striated sphincter muscle that constricts the urethra

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