Maturation phase

MATURATION PHASE

  • Manchette migrate towards the tail and begin to disappear.
  • Mitochondria are assembled around flagellum to form the middle piece.
  • Dense outer fibres form around the flagellum.
  • Post-nuclear cap is formed from manchette microtubules.
  • Annulus forms the juncture between the middle piece and principal piece.
  • During later stages of spermiogenesis, sertoli cells forms the cytoplasm remaining after elongation of spermatid into a spheroidal lobule called residual body.
  • Lobule of cytoplasm is connected to the elongated spermatid by a slender thread cytoplasm and is inter connected with other residual bodies by intercellular bridges.

Formation of residual bodies completes final maturation and spermatids are ready for release.

  • Sertoli cells also remove degenerating germ cells.

Click the refresh button to view picture

Last modified: Tuesday, 12 June 2012, 4:29 AM