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Spermatogenesis is the process by which haploid spermatozoa develop from germ cells in the These develop into mature spermatozoa, also known as sperm cells. Thus Spermatogenesis produces mature male gametes, commonly called sperm but more specifically known as spermatozoa, which are able to fertilize the.

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In the absence of spermatogenesis (sperm production), only Sertoli cells are seen on microscopic inspection of a testicular biopsy.

The fundamental building block of male fertility is the sperm cell. Often thought of as a “lean, mean racing machine,” sperm cells are essentially concentrated.

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Description:The seminiferous tubules, in which the sperm are produced, constitute about 90 percent of the testicular mass. In the young male the tubules are simple and composed of undeveloped sperm-producing cells spermatogonia and the Sertoli cells. In the older male the tubules become branched,… Sperm cells are continually being produced by the testes, but not all areas of the seminiferous tubules produce sperm cells at the same time. One immature germ cell takes as long as 74 days to reach final maturation, and during this growth process there are intermittent resting phases. The immature cells called spermatogonia are all derived from cells called stem cells in the outer wall of the seminiferous tubules. The stem cells are composed almost entirely of nuclear material.

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