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The reproductive system ensures the survival of the species. Other systems in the body, such as the endocrine and urinary systems, work continuously to maintain homeostasis for the survival of the individual. An individual may live a long, healthy, and happy life without producing offspring, but if the species is to continue, at least some individuals must produce offspring.
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Seminiferous Tubules
Spermatocytes are the cells that develop from the final spermatogonial division (B spermatogonia), from which spermatids, then spermatozoa with half the chromosomal complement of the original progenitor cell, are produced after the meiotic phase of spermatogenesis.
The spermatid is a haploid male gametid produced by secondary spermatocyte division. Because of meiosis, each spermatid only has half of the genetic material found in the original primary spermatocyte.