Spermiogenesis

SPERMIOGENESIS

  • The differentiation of the spermatids into sperm cells is called spermiogenesis.
    • Through a progressive sequence of changes, each of the comparatively large, spherical, non-motile spermatid is metamorphosed in to a small, elongated, motile sperm composed typically of three parts- head, middle piece and tail.

Nuclear condensation

  • The nucleus moves to one edge of the cell;
  • Thickening and reduction of the nuclear size;
  • Condensation of the nuclear contents into the smallest space
    • Cytoplasma reduction
      • Sloughening and elimination of all unnecessary cytoplasm
    • Acrosome formation
      • Golgi apparatus produces the acrosome containing enzymes and it takes its place around the anterior end of the sperm head.
      • It plays an important role in the penetration through the pellucid zone of the oocyte.
    • Flagellum formation
      • Form the sperm cell tail
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Last modified: Monday, 25 July 2011, 8:40 AM