#male_reproductive_system  the reproductive system of males
  supertype:  #reproductive_system__genital_system__genitalsystem  organs and tissues involved in the production and maturation of gametes and in their union and subsequent development as offspring
  part of:  #male_body
  part:  #prostate_gland__prostate  a firm partly muscular chestnut sized gland in males at the neck of the urethra; produces a viscid secretion that is the fluid part of semen
  part:  #sperm_cell__spermcell__sperm__spermatozoon__spermatozoan  the male reproductive cell; the male gamete
     part:  #flagellum  long lash-like appendage used for locomotion (e.g., in sperm cells and some protozoa)
     part:  #acrosome  a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg
  part:  #male_genitalia__male_genitals__male_genital_organ__family_jewels  external male sex organs
     part:  #scrotum  the external pouch that contains the testes
        part:  #raphe__rhaphe  a ridge that forms a seam between two parts
        part:  #seminal_duct__seminalduct  the efferent duct of the testis in man
           part:  #epididymis  a convoluted tubule in each testis; carries sperm to vas deferens
              part:  #vasa_efferentia  the several highly convoluted tubules that lead from the rete testis to the vas deferens and form the head of the epididymis
           part:  #vas_deferens__ductus_deferens  a duct that carries spermatozoa from the epididymis to the ejaculatory duct
           part:  #ejaculatory_duct__ejaculatoryduct  a part of the seminal duct formed by the duct from the seminal vesicle and the vas deferens; passes through the prostate gland
     part:  #testis__testicle__orchis__ball__ballock__bollock__nut  one of the two male reproductive glands that produce spermatozoa and secrete androgens; "she kicked him in the balls and got away"
        part:  #testicular_artery__internal_spermatic_artery__arteria_testicularis  a branch of the aorta supplying the testicles
        part:  #testicular_vein__vena_testicularis  a vein from the testicles
        part:  #seminiferous_tubule  any of the numerous long convoluted tubules in the testis which are the sites where spermatozoa mature
        part:  #epididymis  a convoluted tubule in each testis; carries sperm to vas deferens
        part:  #rete_testis  network of tubules carrying sperm from the seminiferous tubules to the vasa efferentia
        part:  #vas_deferens__ductus_deferens  a duct that carries spermatozoa from the epididymis to the ejaculatory duct
        part:  #spermatic_cord__spermaticcord  a structure resembling a cord that suspends the testis within the scrotum and contains the vas deferens and other vessels and nerves
     part:  #male_reproductive_gland  the reproductive organs of a man
     part:  #penis__peni__phallus__phallu__member  the male organ of copulation (`member' is a euphemism)
        part:  #glans_penis__glanspeni  the conical mass of erectile tissue that forms the head of the penis
        part:  #vena_bulbi_penis  vein of the head of the penis; tributary of the internal pudendal vein that drains the perineum
        part:  #urethra  duct through which urine is discharged in most mammals and which serves as the male genital duct
           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
        part:  #prepuce  a fold of skin covering the tip of the penis
  part:  #Cowper's_gland__bulbourethral_gland__bulbourethralgland  either of two glands that discharge a component of seminal fluid into the urethra; homologous to Bartholin's gland in the female
  part:  #testis__testicle__orchis__ball__ballock__bollock__nut  one of the two male reproductive glands that produce spermatozoa and secrete androgens; "she kicked him in the balls and got away"
  part:  #vas_deferens__ductus_deferens  a duct that carries spermatozoa from the epididymis to the ejaculatory duct
  part:  #penis__peni__phallus__phallu__member  the male organ of copulation (`member' is a euphemism)
  part:  #seminal_vesicle__seminalvesicle  adds nutrient fluid to semen during ejaculation

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