fertilisation

    Cards (7)

    • Acrosome Reaction 1
      cells surrounding the ovum release chemicals which triggers the acrosome reaction
    • Acrosome Reaction 2
      the acrosome swells and fuses with the sperm cell membrane
    • Acrosome Reaction 3
      acrosome releases digestive enzymes
    • Acrosome Reaction 4
      the enzymes digest the follicles of the zona pellucida
    • Cortical Reaction 1
      lysosomes release digestive enzymes via exocytosis
    • Cortical reaction 2
      the zona pellucida thickens
    • Cortical Reaction 3 

      polyspermy is prevented
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