What is the function of the epididymis in the male reproductive system?

The function of the epididymis in the male reproductive system is to store and mature sperm. After sperm are produced in the testes, they travel to the epididymis, where they undergo maturation. This maturation process is crucial because it enables the sperm to gain the capability to swim and fertilize an egg. Meanwhile, the epididymis provides a suitable environment for the sperm to develop, where they can also be stored until ejaculation occurs. The other options do not pertain to the role of the epididymis; for instance, bile storage is a function of the gallbladder and not related to sperm maturation or storage. Filtering blood is a function associated with the kidneys rather than the reproductive system, and producing eggs is a function exclusive to the female reproductive system. Therefore, the role of the epididymis as a site for sperm storage and maturation is essential for male fertility.