Acrosomal Exocytosis

  • Claudia Nora Tomes
Part of the Molecular Biology Intelligence Unit book series (MBIU)


Sexual reproduction to perpetuate a given species occurs through fertilization, during which a diploid zygote is formed to produce a genetically distinct individual. To this end, the haploid sperm and haploid egg must collide to allow entry of the sperm head delivering the male chromatin into the egg cytoplasm. Both the male and female gametes undergo regulated exocytose—termed the acrosome reaction and the cortical reaction respectively—at different times during their encounter. The success of fertilization depends on these exocytoses.


Membrane Fusion Zona Pellucida Human Sperm Acrosome Reaction Sperm Head 


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Copyright information

© Landes Bioscience and Springer Science+Business Media 2007

Authors and Affiliations

  • Claudia Nora Tomes
    • 1
  1. 1.Laboratorio de Biología Celular y Molecular, Instituto de Histología y Embriología (IHEM-CONICET), Facultad de Ciencias Médicas, CC 56Universidad Nacional de CuyoMendozaArgentina

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