What Are Seminiferous Tubules?
Located in the testicles, the seminiferous tubules are tiny tubes in which spermatozoa or sperm cells are formed. The seminiferous tubules are lined with Sertoli cells, specialized cells that serve as a sort of “nursery” for growing sperm cells. Spermatogenic cells line the layer of Sertoli cells. These spermatogenic cells mature into full-fledged sperm through a complex process called meiosis. Seminiferous tubules are found in all mammals, as well as in birds and some fish.