| The cervix of the cow and ewe have distinct, well developed protrusions called cervical rings (CR). The sow has interdigitating prominences (IP). The mare has no cervical rings but has many longitudinal cervical folds (CF) that are continuous with the endometrial folds of the uterus. Arrows indicate the pathway of the cervical canal from the cranial vagina (CV) toward the uterus. CF = Cervical Folds CR = Cervical Rings CV = Cranial Vagina FV = Fornix Vagina IP = Interdigitating Prominences UtB = Uterine Body |