The urethra is a thin, fibromuscular tube through which urine exits the body and in males, through which semen is ejaculated. In males, the urethra functions as a passage way for both urine and semen when a man ejaculates. The urethra is attached to the urethral sphincter (a muscular organ that keeps urine in the bladder until it is discharged). The characteristics of the urethra in males are different from those in females because the urethra is connected with the reproductive structures. The length of the female’s urethra is about 4cm long, while that of males is about 20 cm.
