* Elaborate system of folds and crypts to provide a site of storage where sperm are protected from the spermicidal environment of the vagina and [[Female_Reproductive_Tract_-The_Uterus_-_Anatomy_%26_Physiology|uterus]] in the ewe. | * Elaborate system of folds and crypts to provide a site of storage where sperm are protected from the spermicidal environment of the vagina and [[Female_Reproductive_Tract_-The_Uterus_-_Anatomy_%26_Physiology|uterus]] in the ewe. |