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Abstract
STRUCTURE OF THE SPERM
The sperm is the male gamete, develops as::result of differentiation of the germinal epithelial cells lining the seminiferous tubules, where the spermatogonia evolves into the spermatoz.oa. This process is known as spermatogenesis, it takes a period of 74 days. Components of spermatogenesis include: the undifferentiated spermatogonia renewal and proliferation, spennatogonial differentiation, spermatocyte development and meiotic division then maturation into spermatid, spenniogenesis or maturation of spermatid into spermatozoa through formation of the acrosome, changes in the nuclear morphology and formation of the flagellum. Golgi apparatus provides material for the acrosome which grows like a tight fitting cap over the nucleus. It is actually a moditied lysosomal bag containing enzymes, intimately invested by the overlying plasma membrane. At the end of spermatogenesis, the nucleus is transformed into a dense flattened nucleus containing greatly compacted chromatin which reveals little structural details. After that, spermiation occurs and individual spermatozoa are release into the tubular lumen’’’.