The seminiferous tubules ( seminiferous tubules ) are the place in the testis , in the context of on the spermatogenesis the sperm is formed and from the testes in the vas deferens to be routed.
They are surrounded by a connective tissue cover and lined with a layer of tissue, the germinal epithelium. In this tissue layer, the sperm are formed in a multi-stage maturation process, the spermatogenesis. The Sertoli cells that nourish the sperm are also located in the germinal epithelium . In an adult male, all of the testicular tubules would be around 350 meters long.