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Sperm in the Female Tract - Anatomy & Physiology (view source)
Revision as of 08:31, 8 September 2008
, 08:31, 8 September 2008→Penetrating the Zona Pellucida
** '''Zona protein 3''': binds to proteins on the spermatozoal membrane.
** '''Zona protein 3''': binds to proteins on the spermatozoal membrane.
* The sperm plasma membrane contains two zona binding sites:
* The sperm plasma membrane contains two zona binding sites:
** Primary zona binding region: responsible for adherence to the zona pellucida.
** '''Primary zona binding region''': responsible for adherence to the zona pellucida.
** Acrosome reaction promoting ligand: when this binds to the zona protein 3, signal transduction occurs to initiate the acrosome reaction.
** '''Acrosome reaction promoting ligand''': when this binds to the zona protein 3, signal transduction occurs to initiate the acrosome reaction.
* After the acrosome reaction, zona penetration is a rapid process (minutes).
* After the acrosome reaction, zona penetration is a rapid process (minutes).
* The acrosome reaction releases enzymes:
* The acrosome reaction releases enzymes: