<Tr> <Th> MeSH </Th> <Td> D004822 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> <P> The epididymis (/ ɛpɪˈdɪdɪmɪs /; plural: epididymides / ɛpɪdɪˈdɪmədiːz / or / ɛpɪˈdɪdəmɪdiːz /) is a tube that connects a testicle to a vas deferens in the male reproductive system . It is present in all male reptiles, birds, and mammals . It is a single, narrow, tightly - coiled tube (in adult humans, six to seven meters in length) connecting the efferent ducts from the rear of each testicle to its vas deferens . </P> <P> The epididymis can be divided into three main regions: </P>

In the walls of which structure do spermatozoa develop