spermatogeneisis
Spermatogenesis is the process by which sperm cells are produced in the male reproductive system. It occurs in the testes, which are located within the scrotum. The process begins with the division of spermatogonia, which are diploid germ cells, into primary spermatocytes. These primary spermatocytes then undergo meiosis I, resulting in two secondary spermatocytes. Each secondary spermatocyte then undergoes meiosis II, producing four haploid spermatids. These spermatids mature into sperm cells, also known as spermatozoa, which are then released into the seminiferous tubules and eventually into the epididymis, where they are stored and mature further. Spermatogenesis is a continuous process that occurs throughout a man's life, with the production of sperm cells being regulated by hormones such as follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The entire process takes approximately 64 days to complete.