#urethral_sphincter__musculus_sphincter_urethrae  a striated sphincter muscle that constricts the urethra
  supertype:  anatomical_sphincter__sphincter__sphinctermuscle  a ring of muscle that contracts to close an opening
  part of:  urethra  duct through which urine is discharged in most mammals and which serves as the male genital duct
     part of:  urogenital_system__urogenital_apparatus__urinary_system__urinarysystem__urinary_apparatus__urinaryapparatu__genitourinary_system__genitourinarysystem__genitourinary_apparatus__genitourinaryapparatu__systema_urogenitale__systemaurogenitale__apparatus_urogenitalis  the system that includes all organs involved in reproduction and in the formation and voidance of urine
     part of:  urinary_tract__urinarytract  the organs and tubes involved in the production and excretion of urine
        part of:  urogenital_system__urogenital_apparatus__urinary_system__urinarysystem__urinary_apparatus__urinaryapparatu__genitourinary_system__genitourinarysystem__genitourinary_apparatus__genitourinaryapparatu__systema_urogenitale__systemaurogenitale__apparatus_urogenitalis  the system that includes all organs involved in reproduction and in the formation and voidance of urine
     part of:  vulva  external parts of the female genitalia
        part of:  female_reproductive_system  the reproductive system of females
           part of:  female_body  the body of a female human being
              part of:  female_person__female  a person who belongs to the sex that can have babies
     part of:  penis__peni__phallus__phallu__member  the male organ of copulation (`member' is a euphemism)
        part of:  male_reproductive_system  the reproductive system of males
           part of:  male_body  the body of a male human being
              part of:  male_person__male  a person who belongs to the sex that cannot have babies
        part of:  male_genitalia__male_genitals__male_genital_organ__family_jewels  external male sex organs
           part of:  male_body  the body of a male human being
           part of:  male_reproductive_system  the reproductive system of males

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