Spermatogenesis starts at the age of puberty due to a significant increase in the secretion of GnRH. (a) What is the source of GnRH? (b) Explain the role of GnRH in spermatogenesis.
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Explanation:
The onset of puberty is signaled by high pulses of GnRH secreted by the hypothalamus; this in turn signals the release of FSH and LH from the pituitary gland. FSH causes the Sertoli cells of the testes (which help nurse developing sperm cells) to begin the process of spermatogenesis in the testes.