What is the Origin of Ovulatory Cycles?

The term combines "ovulatory," relating to the process of ovulation, and "cycle," denoting the recurring sequence of hormonal and physical changes. The detailed, multi-phase understanding of the female reproductive cycle was systematically developed through decades of dedicated endocrinological and gynecological research.

What is the Mechanism of Ovulatory Cycles?

The cycle begins with the follicular phase, where FSH stimulates ovarian follicle growth and subsequent estradiol secretion. The surge of estradiol then triggers a potent positive feedback loop, leading to the massive LH surge, which is the direct stimulus for ovulation. Following the egg release, the luteal phase commences, dominated by progesterone from the corpus luteum, which prepares the uterine lining for potential implantation.

Ovulatory Cycles

Meaning

Ovulatory Cycles describe the regular, highly regulated series of physiological events in the female reproductive system that culminates in the timely release of a mature egg from the ovary. This complex process is orchestrated by the precise, rhythmic interplay and feedback loops of the central gonadotropin-releasing hormone (GnRH) and the peripheral hormones, follicle-stimulating hormone (FSH), luteinizing hormone (LH), estrogen, and progesterone. The predictable occurrence of these cycles is the most fundamental clinical indicator of a healthy hypothalamic-pituitary-ovarian axis and overall reproductive vitality.