Urethra

The urethra is a tubular organ that conveys the urine from the bladder to the outside. The size and function of the urethra differs between males and females. In females it is a simple tube approximately four centimeters in length and serves only to drain the urine from the body. In males, the urethra also plays a reproductive role. The male urethra is also much longer measuring approximately 20 centimeters in length. The male urethra is divided into three sections: the prostatic urethra that passes through the prostate, the membranous urethra and the penile urethra. The prostatic urethra receives drainage from the prostate gland and also ejaculatory ducts from the reproductive system