Changes

* In the [[Female_Reproductive_Tract_-The_Oviduct_-_Anatomy_%26_Physiology|oviduct]], capacitation is completed and sperm show hyperactive motility.

* In the [[Female_Reproductive_Tract_-The_Oviduct_-_Anatomy_%26_Physiology|oviduct]], capacitation is completed and sperm show hyperactive motility.

* Sperm attach to the cillia of the epithelium in the isthmus of the [[Female_Reproductive_Tract_-The_Oviduct_-_Anatomy_%26_Physiology|oviduct]] to form a functional reservoir.  Only thousands from the initial millions in the ejaculate form this store, as 5-98% may be eliminated by retrograde flow or phagocytosis in the early female tract.

* Sperm attach to the cillia of the epithelium in the isthmus of the [[Female_Reproductive_Tract_-The_Oviduct_-_Anatomy_%26_Physiology|oviduct]] to form a functional reservoir.  Only thousands from the initial millions in the ejaculate form this store, as 5-98% may be eliminated by retrograde flow or phagocytosis in the early female tract.

* At the uterotubal junction, the acrosome reaction occurs and the spermatozoon penetrated the oocyte in fertilization with the formation of male and female pronuclei.

* At the uterotubal junction, the acrosome reaction occurs and the spermatozoon penetrates the oocyte in fertilization with the formation of male and female pronuclei.

== Capacitation==

== Capacitation==