What is the purpose of the sperm duct?

The sperm duct, also known as the vas deferens, primarily functions to transport sperm from the epididymis to the urethra. Once sperm are produced in the seminiferous tubules of the testes, they are stored and matured in the epididymis. During ejaculation, the sperm travel through the vas deferens, where they can mix with seminal fluid to form semen before exiting the body through the urethra.

The other options refer to processes that do not accurately represent the function of the sperm duct. The sperm duct does not produce sperm, as this occurs in the testes. Additionally, it does not carry sperm to the epididymis; rather, it carries sperm away from the epididymis. Additionally, the creation of sperm cells occurs in specific structures within the testis, not in the sperm duct itself.