Gonadotropin releasing hormones are correct by

Options

A. Adenohypophysis .
B. Neurohypophysis
C. Hypothalamus
D. Both (A) and (B )

Answer

To solve the question regarding the source of gonadotropin-releasing hormones, we can break it down step by step:

### Step-by-Step Solution:

1. **Understanding Gonadotropin-Releasing Hormones (GnRH)**:
- Gonadotropin-releasing hormones are crucial for the regulation of the reproductive system. They stimulate the release of gonadotropins (LH and FSH) from the anterior pituitary gland.

2. **Analyzing the Options**:
- The question provides four options regarding where gonadotropin-releasing hormones are produced.

3. **Option 1: Adenohypophysis**:
- The adenohypophysis, also known as the anterior pituitary, is responsible for producing several hormones such as growth hormone, prolactin, and others. However, it does not produce gonadotropin-releasing hormones. Therefore, this option is incorrect.

4. **Option 2: Neurohypophysis**:
- The neurohypophysis, or posterior pituitary, releases hormones such as oxytocin and vasopressin. It does not produce gonadotropin-releasing hormones either. Thus, this option is also incorrect.

5. **Option 3: Hypothalamus**:
- The hypothalamus is the correct source of gonadotropin-releasing hormones. It synthesizes and secretes GnRH, which then acts on the adenohypophysis to stimulate the release of LH and FSH. This option is correct.

6. **Option 4: A and B**:
- Since both adenohypophysis and neurohypophysis do not produce gonadotropin-releasing hormones, this option is incorrect as well.

7. **Conclusion**:
- The correct answer is **Option 3: Hypothalamus**.

### Final Answer:
The correct source of gonadotropin-releasing hormones is the **Hypothalamus**.

---