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Fertilisation - Anatomy & Physiology (view source)
Revision as of 18:16, 3 July 2012
, 18:16, 3 July 2012→Syngamy
[[Image:Fertilization histology.jpg|right|thumb|250px|<small><center> Electron Scanning Micrograph of Spermatozoa in the Uterine Horn. Copyright RVC 2008 (Courtesy of John Bredl (RVC))</center></small>]]
[[Image:Fertilization histology.jpg|right|thumb|250px|<small><center> Electron Scanning Micrograph of Spermatozoa in the Uterine Horn. Copyright RVC 2008 (Courtesy of John Bredl (RVC))</center></small>]]
* 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 & Physiology|acrosome reaction]].
**Brought about by a fusion protein that is inactive prior to the [[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.
[[Category:Reproductive System]]
[[Category:Pregnancy and Parturition]]
[[Category:Bullet Points]]