the Process occurs in the seminiferous tubules and is supported by sertoli cells which provide the nutrients and energy for the division.Spermatogonia grow and enlarge until big enough to divide, once they are ready they recalled primary spermatocytes. the first meiosis division is primary spermatocytes which form secondary spermatocytes. these then form spermatids , the spermatids then differentiate into spermatozoa.