what is the function of epididymis

The epididymis is a long, coiled tube that rests on the back of each testicle. Its primary functions are sperm transport and sperm maturation. The epididymis stores the sperm for maturation and transports it to the vas deferens. The wall of the epididymis is lined by thick pseudostratified columnar epithelium, and the stereocilia reabsorb the fluid and make the sperms more concentrated. The principal cells secrete glycoproteins, which help in the maturation of spermatozoa. The epididymis also protects sperm cells during epididymal transit from damage caused by the external environment. The epididymis plays a vital role in the storage of sperm post-production and is the site of further sperm maturation before ejaculation.