Difference between revisions of "Fertilisation - Anatomy & Physiology"

Revision as of 14:49, 3 July 2008

When the Spermatozoan 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.
- Brought about by a fusion protein that is inactive prior to the acrosome reaction.
Nucleus of the Spermatozoon is within the Oocyte cytoplasm.
Sperm nuclear membrane disappears.
Sperm nucleus decondenses.

Electron Scanning Micrograph of Spermatozoa in the Uterine Horn. Copyright RVC 2008 (Courtesy of John Bredl (RVC))

During the first and second meiotic divisions of Oogenesis small,dense cortical granules move to the periphery of the Oocyte cytoplasm.

Revision as of 14:48, 3 July 2008 (view source) Lwilkie (talk \| contribs) (→‎Fusion with the Oocyte) ← Older edit		Revision as of 14:49, 3 July 2008 (view source) Lwilkie (talk \| contribs) (→‎Fusion with the Oocyte) Newer edit →
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	[[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>]]
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