What is the main purpose of the epididymis?

The primary function of the epididymis is to store and mature sperm. After sperm are produced in the testes, they travel to the epididymis, where they undergo a critical maturation process. This maturation is essential because, while sperm are produced in the testes, they are initially not fully capable of fertilizing an egg. The epididymis provides a suitable environment for sperm to develop motility and gain the ability to fertilize an ovum, which is crucial for reproduction.

Additionally, the epididymis is responsible for the storage of sperm until ejaculation, helping to ensure that viable sperm are available when needed. This role is integral to male fertility, as it allows for the management and timing of sperm release.

In contrast, the other options describe functions that are not primarily associated with the epididymis. For example, testosterone production occurs mainly in the testes, while the conductance of sperm to the urethra is more closely related to the functions of the vas deferens. Likewise, the secretion of seminal fluid is primarily associated with the accessory glands, such as the seminal vesicles and prostate gland, rather than the epididymis itself.