Fertilization Facts

• Fertilization is the fusion of male and female gametes to form a zygote.
• Human fertilization is internal and viviparous.
• Only one ovum is released in human females during the menstrual cycle.
• Human males produce 300-400 million sperms per ejaculation.
• Capacitation is a process that provides sperms the ability to fertilize an ovum.
• Fertilization involves the approximation of sperm and ovum.
• The acrosome reaction occurs when the acrosome covering degenerates and enzymes are released.
• The egg reaction involves the development of a fertilization cone and the extrusion of cortical granules.
• The activation of the ovum involves meiosis II and the extrusion of a secondary polar body.
• The fusion of sperm and egg nuclei forms a synkaryon and the fertilized egg is called a zygote.

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