EMBRYOGENESIS EMBRYOGENESIS | Page 9

DETAILS OF SPERMATOGENESIS *SPERMATOGENESIS is the process of production of spermatozoa from spermatogonial stem cells. *SPERMATOGONIA yield PRIMARY SPERMATOCYTES by mitotic division. *EACH primary spermatocyte give rise to 2 SECONDARY SPERMATOCYTES BY FIRST meiotic division. *EACH secondary spermatocyte divides into 2 SPERMATIDS BY MEIOSISĒ *EACH spermatid differentiates into SPERMATOZOA OR SPERMS. *THE PROCESS TAKES 74 DAYS IN HUMANS(minimum) *TESTES produces 200-300million sperms daily .