Epididymis

Definition - What does Epididymis mean?

The epididymis is a portion of the male sexual reproductive system that houses and transfers sperm once it has been developed by the testes and before it is expelled from the penis during ejaculation. The epididymis can be impacted by a condition called epididymitis, inflammation of the epididymis.

FertilitySmarts explains Epididymis

The epididymis is a long coiled tube that sits on the back of the testes. When sperm is released from the testes it is too immature to contribute to fertilization. Therefore, the sperm enters the head of the epididymis where it is stored for up to a week while it continues to develop before completing maturation in the body of the epididymis. Once it reaches the tail, the sperm's development is completed, and it is ready to be released.

A condition called epididymitis can impact the epididymis. Most commonly caused by sexually transmitted infections, epididymitis may require antibiotics to treat. It is rare that epididymis impacts a man’s fertility.

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