What is the function of the urethra?

The urethra serves a vital role in the human body by providing a passageway for urine to exit from the urinary bladder to the outside of the body. It is a tube that transports urine, and in males, it also carries semen during ejaculation. The anatomy of the urethra is essential for the proper functioning of the urinary and reproductive systems, as it ensures that waste products are expelled efficiently and allows for reproductive functions when necessary. Understanding this function is key in studying human anatomy and physiology, particularly in discussions surrounding the urinary system and male reproductive health.