* Production of oestradiol not only prevents luteolysis, but serves to stimulate contractions of the uterine myometrium. This ensures distribution of the conceptuses with proper spacing along the uterine horns. | * Production of oestradiol not only prevents luteolysis, but serves to stimulate contractions of the uterine myometrium. This ensures distribution of the conceptuses with proper spacing along the uterine horns. |