Puberty is the phase in which adolescents acquire sexual maturity and become reproductively competent.
Spermatogonia:
Spermatogonia are rounded cells that sit on the basement membrane of the seminiferous tubules.
Spermatogonia is a male germ cell that is undifferentiated.
Spermatogonia undergo spermatogenesis to generate mature spermatozoa in the testis's seminiferous tubules.
Spermatogenesis begins with the division of spermatogonia (diploid (2n) immature sperm cells produced from embryonic germ cells).
Spermatocytes are vulnerable to injury throughout their extended meiotic phase.
Some spermatogonia mature into primary spermatocytes
Puberty phase:
The amount of testosterone rises during puberty. During puberty, the hypothalamus secretes more GnRH, which increases the release of gonadotropins (LH and FSH). They increase androgen secretion and spermatogenesis.
This starts meiosis I. The main spermatocyte develops two secondary spermatocytes during this stage, which then enter meiosis II.
Each secondary spermatocyte produces two haploid spermatids (haploid cells), for a total of four spermatids.
Spermiogenesis is the ultimate stage of spermatogenesis, during which spermatids develop into spermatozoa (sperm cells).
The maturation of a spermatozoon completes the spermiogenesis phase.
