The process of spermatogenesis and oogenesis in most vertebrates are under the influence of which hormone ?

Options

A. Oxytocin
B. FSH
C. ACTH
D. ICSH

Answer

**Step-by-Step Solution:**

1. **Understand the Processes**:
- Spermatogenesis is the process of sperm formation in males.
- Oogenesis is the process of egg (ovum) formation in females.

2. **Identify Relevant Hormones**:
- The question provides four hormones: Oxytocin, FSH (Follicle Stimulating Hormone), ASTH, and ICSH (Interstitial Cell Stimulating Hormone).
- We need to determine which of these hormones influences both spermatogenesis and oogenesis.

3. **Role of FSH**:
- In males, FSH stimulates Sertoli cells, which are essential for the process of spermatogenesis.
- In females, FSH promotes the growth and maturation of ovarian follicles, which is crucial for oogenesis.

4. **Role of LH**:
- Luteinizing Hormone (LH) also plays a role in both processes. In males, it stimulates Leydig cells to produce testosterone, which is important for spermatogenesis. In females, it triggers ovulation and the release of the egg from the Graafian follicle.

5. **Conclusion**:
- Both FSH and LH are gonadotrophins that influence spermatogenesis and oogenesis. However, since the question specifically asks for the hormone that influences both processes, the best answer is **FSH**.

**Final Answer**: FSH (Follicle Stimulating Hormone)

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