Dual Surge in the Menstrual Cycle
In a typical menstrual cycle, hormonal variations play a crucial role in regulating ovulation and the menstrual process. The dual surge is primarily associated with two hormones: Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH).

1. Luteinizing Hormone (LH) Surge
- The LH surge is critical for triggering ovulation, which occurs mid-cycle.
- It is stimulated by rising estrogen levels produced by the developing follicle.
- A sharp increase in LH leads to the release of the mature egg from the ovary.

2. Follicle-Stimulating Hormone (FSH) Surge
- FSH is responsible for stimulating the growth and maturation of ovarian follicles.
- It also experiences a surge alongside LH, although the peak may occur slightly earlier.
- Both hormones work synergistically to ensure successful ovulation and prepare the body for potential pregnancy.

3. Estrogen and Progesterone
- Estrogen levels rise during the follicular phase, peaking right before the LH surge.
- Progesterone, however, does not exhibit a dual surge during the menstrual cycle; it increases after ovulation and is essential for maintaining the uterine lining.

Conclusion
In summary, during one menstrual cycle, the dual surge is predominantly observed with **LH** and **FSH**. Understanding this hormonal interplay is essential for grasping the physiological processes involved in ovulation and fertility.