Name the hypothalamic hormone which stimulates the pituitary synthesis and relased of gonadotrophins

Answer

To answer the question, "Name the hypothalamic hormone which stimulates the pituitary synthesis and release of gonadotropins," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Role of Gonadotropins**:
- Gonadotropins are hormones that play a crucial role in regulating reproductive functions. The two main gonadotropins are Luteinizing Hormone (LH) and Follicle Stimulating Hormone (FSH).

2. **Identify the Source of Gonadotropins**:
- These hormones (LH and FSH) are secreted by the anterior pituitary gland.

3. **Recognize the Control Mechanism**:
- The anterior pituitary gland is regulated by the hypothalamus, which is a part of the brain that controls various hormonal functions.

4. **Determine the Hypothalamic Hormone**:
- The hypothalamus secretes a specific hormone that stimulates the anterior pituitary gland to produce and release gonadotropins. This hormone is known as Gonadotropin-Releasing Hormone (GnRH).

5. **Conclude the Answer**:
- Therefore, the hypothalamic hormone that stimulates the synthesis and release of gonadotropins from the pituitary gland is **Gonadotropin-Releasing Hormone (GnRH)**.

### Final Answer:
**Gonadotropin-Releasing Hormone (GnRH)**