G. Capacitation leads to acrosome changes that lead to sperm penetration of the ovum. Acrosome Reaction A. Fusion of the the sperm plasma membrane with the outer acrosomeal membrane. B. Highest Conception a. Interaction of Sperm and Ovum 1. Sperm attachment and migration through the zona pellucida c. Fusion of sperm and ovum plasma membranes 2.
Oviductal secretions cause hyperactivity too.
B. Much if not all of cumulus removed by mechanical means as ovum travels through the oviduct. Arylsulfatase Boar 3. Sperm Penetration A. Occurs 5 to 15 minutes after sperm attachment. B. Enzymes released to penetrate zona a. Once the zona is penetrated the sperm interacts with the vitelline membrane in the vitelline space.