What is the function of LH in the female reproductive system?

Luteinizing hormone (LH) plays a crucial role in the female reproductive system, primarily by stimulating ovulation and facilitating the conversion of a ruptured follicle into the corpus luteum. During the menstrual cycle, a surge in LH levels triggers the release of the mature egg from the ovarian follicle, which is known as ovulation. Following ovulation, LH supports the transformation of the follicle into the corpus luteum, which is responsible for producing progesterone. This hormone is essential for maintaining the uterine lining in preparation for a potential pregnancy. If pregnancy does not occur, the corpus luteum eventually degenerates, leading to a decrease in progesterone and the onset of menstruation. This cycle illustrates the pivotal role LH plays in both ovulation and the regulation of the menstrual cycle.