Hormone controlling human menstrual cycle is

Options

A. Estrogen
B. FSH
C. LH
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding the Menstrual Cycle**: The menstrual cycle is regulated by various hormones that play specific roles at different phases of the cycle.

2. **Identifying Key Hormones**:
- **Estrogen**: This hormone is primarily responsible for the thickening of the endometrial lining (the inner lining of the uterus) and the healing of the uterine wall.
- **FSH (Follicle Stimulating Hormone)**: FSH is crucial for the growth of Graafian follicles in the ovaries. It also promotes the secretion of estrogen.
- **LH (Luteinizing Hormone)**: LH triggers ovulation, which typically occurs around the 14th day of the menstrual cycle.

3. **Conclusion**: Since all three hormones—Estrogen, FSH, and LH—play significant roles in regulating the menstrual cycle, the correct answer to the question is "all of the above".

**Final Answer**: The hormone controlling the human menstrual cycle is all of the above (Estrogen, FSH, and LH).

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