The epididymis is a coiled tube located at the back of each testis. Its primary functions include:
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Sperm Storage: After sperm are produced in the testes, they move to the epididymis for maturation and storage. The epididymis can store sperm for several weeks.
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Sperm Maturation: During their time in the epididymis, sperm undergo a maturation process, where they gain the ability to swim and fertilize an egg. This process can take about two to three weeks.
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Sperm Transport: The epididymis serves as a channel through which sperm travel from the testes to the vas deferens, the duct that leads to the urethra during ejaculation.
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Fluid Absorption: The epididymis also plays a role in reabsorbing excess fluid that surrounds the sperm, thus concentrating them.
Overall, the epididymis is crucial for ensuring that sperm are fully matured and capable of fertilization before they are ejaculated.