Male reproductive system - urethera, Biology


  • It is common duct as sperms & urine both pass from it.
  • It receives juices of prostatic gland & cowper's gland.
  • Urethra is 20 cm long, passes through the penis, it's lumen is star shaped.
  • It has 3 regions -

                (i) A short proximal prostatic urethra surround by prostate gland.

                (ii) A very short middle membranous urethra without any covering.

                (iii) A long distal penial urethra.

  • Urethra has 2 sphintors. Internal sphincter is of smooth muscle fibres at its beginning.
  • External sphinctor is of straited muscle fibres around its membranous part.
Posted Date: 10/3/2012 5:14:25 AM | Location : United States

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