Which one controls the secretion of estrogen

Options

A. HCG
B. Progesterone
C. LH
D. FSH

Answer

To determine which hormone controls the secretion of estrogen, we can analyze the options provided:

1. **Understanding the Role of Estrogen**:
- Estrogen is a key hormone in females that regulates various functions, including the development of secondary sexual characteristics and the menstrual cycle.

2. **Evaluating the Options**:
- **Option A: HCG (Human Chorionic Gonadotropin)**:
- This hormone is produced by the placenta after fertilization. It does not control estrogen secretion; rather, it supports early pregnancy.
- **Option B: Progesterone**:
- Progesterone is secreted by the corpus luteum after ovulation. While it works alongside estrogen, it does not control its secretion.
- **Option C: LH (Luteinizing Hormone)**:
- LH is involved in triggering ovulation and also affects secondary sexual characteristics, but it does not directly control the secretion of estrogen.
- **Option D: FSH (Follicle Stimulating Hormone)**:
- FSH is responsible for stimulating the growth of ovarian follicles and is crucial for the secretion of estrogen. It directly influences the ovarian follicles to produce estrogen.

3. **Conclusion**:
- The hormone that controls the secretion of estrogen is **FSH (Follicle Stimulating Hormone)**. Therefore, the correct answer is **Option D: FSH**.