How Does Uterine Contractility Vary During the Menstrual Cycle?
During the menstrual cycle, the pattern of uterine contractility changes. In the follicular phase, estrogen levels rise, leading to increased contractility. As ovulation occurs, the contractility peaks, aiding in the transport of the ovum. In the luteal phase, progesterone levels increase, which reduces contractility. During menstruation, prostaglandins are released, causing the uterus to contract and expel the endometrial lining.
