Melanocyte stimulating hormone is secreted by

Options

A. Pars intermedia
B. pars nervosa
C. pars distalis
D. thymus

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the secretion of Melanocyte Stimulating Hormone (MSH).

2. **Identifying the Options**: The options provided are:
- A) Pars Intermedia
- B) Pars Nervosa
- C) Pars Distalis
- D) Thymus

3. **Defining MSH**: Melanocyte Stimulating Hormone (MSH) is a hormone that influences pigmentation in the skin by stimulating melanocytes to produce melanin.

4. **Locating the Source of MSH**: MSH is primarily secreted by the pars intermedia, which is a part of the pituitary gland.

5. **Evaluating the Options**:
- **A) Pars Intermedia**: This is the correct answer as it is known to secrete MSH.
- **B) Pars Nervosa**: This part of the pituitary gland primarily stores and releases hormones like oxytocin and vasopressin, not MSH.
- **C) Pars Distalis**: This part is responsible for secreting other hormones such as growth hormone and prolactin, but not MSH.
- **D) Thymus**: This gland is involved in immune function and does not secrete MSH.

6. **Conclusion**: Based on the information, the correct answer is **A) Pars Intermedia**.

**Final Answer**: Melanocyte Stimulating Hormone is secreted by the Pars Intermedia.

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