Melanin pigment is synthesised or secreted under the influence of

Options

A. FSH
B. LH
C. MSH
D. TSH

Answer

**Step-by-Step Solution:**

1. **Identify the Question:** The question asks about the hormone responsible for the synthesis or secretion of melanin pigment.

2. **Review the Options:** The options provided are:
- FSH (Follicle-Stimulating Hormone)
- LH (Luteinizing Hormone)
- MSH (Melanocyte-Stimulating Hormone)
- PSH (not a standard hormone, likely a distractor)

3. **Analyze FSH:**
- FSH is produced by the anterior lobe of the pituitary gland.
- Its primary role is to stimulate the growth of ovarian follicles and the production of estrogen.
- **Conclusion:** FSH is not involved in melanin production.

4. **Analyze LH:**
- LH is also produced by the anterior lobe of the pituitary gland.
- It works alongside estrogen to trigger ovulation and prepare the uterus for implantation.
- **Conclusion:** LH does not influence melanin synthesis.

5. **Analyze MSH:**
- MSH stands for Melanocyte-Stimulating Hormone.
- It is produced by the pars intermedia of the pituitary gland.
- MSH specifically targets melanocytes, which are responsible for the production of melanin, the pigment that gives color to the skin.
- **Conclusion:** MSH directly influences melanin synthesis.

6. **Analyze PSH:**
- PSH does not correspond to a recognized hormone in this context and is likely included to distract from the correct answer.
- **Conclusion:** PSH is not relevant to the question.

7. **Final Answer:** Based on the analysis, the hormone responsible for the synthesis or secretion of melanin pigment is **MSH (Melanocyte-Stimulating Hormone)**.

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