The following hormone acts on anterior pituitary gland and helpful in release of FSH & LH after the age of puberty

Options

A. ACTH
B. TRH
C. Gn RH
D. Gn TH

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks for the hormone that acts on the anterior pituitary gland to stimulate the release of FSH (Follicle Stimulating Hormone) and LH (Luteinizing Hormone) after puberty.

2. **Identify the Options**: The options provided are:
- ACTH (Adrenocorticotropic Hormone)
- TRH (Thyrotropin Releasing Hormone)
- GnRH (Gonadotropin Releasing Hormone)
- GnTH (Gonadotropin Thyrotropin Hormone)

3. **Analyze Each Option**:
- **ACTH**: This hormone stimulates the adrenal cortex and is not involved in the release of FSH and LH. Therefore, it can be eliminated.
- **TRH**: This hormone is responsible for the release of Thyrotropin (TSH) from the anterior pituitary, not FSH or LH. Thus, this option can also be eliminated.
- **GnTH**: This hormone does not exist; hence, it is not a valid option.
- **GnRH**: This is Gonadotropin Releasing Hormone, which specifically stimulates the anterior pituitary gland to release FSH and LH.

4. **Conclusion**: The only hormone that acts on the anterior pituitary gland to stimulate the release of FSH and LH after puberty is GnRH (Gonadotropin Releasing Hormone).

5. **Final Answer**: The correct answer is **GnRH (Gonadotropin Releasing Hormone)**.

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