Ovarian Cycle | Menstrual Cycle | Part 1 | Folliculogenesis | Reproductive Physiology

Introduction to Hormonal Control00:00:00

Overview of the ovarian and uterine cycles regulated by hypothalamic GnRH, pituitary FSH, and LH, highlighting the feedback mechanisms of estrogen throughout the cycle.

Phases and Folliculogenesis00:01:45

Explanation of the menstrual, follicular, and luteal phases. It covers the maturation of primordial follicles into primary and antral follicles, detailing the transformation of oocytes.

Steroidogenesis in the Follicle00:07:14

Detailed mechanism of estrogen production involving interaction between theca cells and granulosa cells through FSH and LH stimulation.

Ovulation and the LH Surge00:09:29

The impact of the mid-cycle estrogen threshold shift, causing an LH surge that triggers final oocyte maturation, rupture of the Graafian follicle, and ovulation.

Luteal Phase and Cycle Reset00:10:56

Formation of the corpus luteum from ruptured follicles, its role in progesterone production, and what happens if fertilization does or does not occur, leading to the corpus albicans and the restart of the cycle.