HUMAN SPERM: Human sperm is the haploid gamete of the Male. By the process of spermatogenesis there is there is formation of sperm.Germ cells undergo Mitosis division followed by Meiosis finally haploid sperm is formed which is n, having 23 number of chromosomes. A sperm generally consist of following parts - Head , Neck, Middle piece and Tail.
Head is a rounded or globular structure. It contains nucleus, cytoplasm and other granules. Nucleus contains chromosomes and it has in it DNA -the genetic material or the hereditary material.Externally the head is covered by a membrane . Anterior portion of the head there is the occurrence of Acrosome. Acrosome helps in dissolving the membrane that surrounds the Egg.
Next to Head is the Neck. Neck posses two centrioles, they are named as Proximal centriole and the Distal centriole. Proximal centrioles plays a great role in the first cleavage of the zygote and Distal centrioles helps in the formation of Axial filament.
Middle piece is more in length than Head or Neck portion. It contains Mitochondria. Mitochondria is the store house of energy ie. ATP. This energy is needed by the sperm to swim inside the female grnital tract.
Finally we find the tail.Tail is the long slender structure which is the cytoplasmic extension. Tail helps in the movement of the sperm.
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