11. In mammals it occurs in the seminiferous tubules of the male testes in a stepwise fashion. 12. Through this hormonal disruption, the process of sperm production in the seminiferous tubules is reduced. 13. It is secreted from the Sertoli cells, located in the seminiferous tubules inside the testes. 14. During the transabdominal stage ( 8 to 15 weeks of gestation ), the seminiferous cords. 15. In the male, the germ cells colonise the seminiferous cords of the medulla, becoming spermatogonia. 16. This absorption creates a fluid current that moves the immobile sperm from the seminiferous tubules to the epididymis. 17. The higher levels of these hormones enable spermatogenesis in the seminiferous tubules and sperm maturation in the epididymis. 18. This is overcome at puberty when cells within seminiferous tubules called Sertoli cells start making their own retinoic acid. 19. Each lobule contains the seminiferous tubules, extending from the base where they end blindly, towards the apex. 20. I believe the seminiferous ducts in the testicles can rupture, causing sharp pain, but no permanent damage.
