During the female sexual cycle the peak of the estrogen secretion is at day

Options

A. 6
B. 12
C. 22
D. 26

Answer

**Step-by-Step Solution:**

1. **Understanding the Menstrual Cycle**: The menstrual cycle is typically around 28 days, divided into different phases: the follicular phase, ovulation, and the luteal phase.

2. **Identifying Key Hormones**: The two primary hormones involved in the female sexual cycle are estrogen and progesterone. Estrogen is primarily responsible for the thickening of the endometrium (the uterine lining) and preparing the uterus for potential implantation of a fertilized egg.

3. **Timing of Estrogen Peak**: During the follicular phase of the menstrual cycle, estrogen levels begin to rise as the follicles in the ovaries mature. The peak of estrogen secretion occurs just before ovulation.

4. **Determining the Day of Peak Estrogen**: According to the typical menstrual cycle, ovulation usually occurs around day 14. Therefore, the peak of estrogen secretion is generally observed between days 12 to 14.

5. **Conclusion**: Based on the information, the peak of estrogen secretion is at day 12 of the menstrual cycle, just before ovulation.

**Final Answer**: The peak of estrogen secretion is at day 12.

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