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Text replace - "-_Anatomy_%26_Physiology" to "- Anatomy & Physiology"
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* When the spermatozoon completely penetrates the zona pellucida and reaches the perivitelline space, it settles into a bed of '''microvilli''' formed by the oocyte plasma membrane.
 
* When the spermatozoon completely penetrates the zona pellucida and reaches the perivitelline space, it settles into a bed of '''microvilli''' formed by the oocyte plasma membrane.
 
* Oocyte plasma membrane fuses with the '''equitorial segment''' and the fertilizing spermatozoon is engulfed.  
 
* Oocyte plasma membrane fuses with the '''equitorial segment''' and the fertilizing spermatozoon is engulfed.  
**Brought about by a fusion protein that is inactive prior to the [[Copulation_-Sperm_in_the_Female_Tract_-_Anatomy_%26_Physiology|acrosome reaction]].
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**Brought about by a fusion protein that is inactive prior to the [[Copulation_-Sperm_in_the_Female_Tract_- Anatomy & Physiology|acrosome reaction]].
 
* Nucleus of the spermatozoon is within the oocyte cytoplasm.
 
* Nucleus of the spermatozoon is within the oocyte cytoplasm.
 
* Sperm nuclear membrane disappears.
 
* Sperm nuclear membrane disappears.
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