What is source of MSH?

Explanation

### Step-by-Step Solution:

1. **Understanding MSH**: MSH stands for Melanocyte Stimulating Hormone. It is important to know what MSH is before identifying its source.

2. **Nature of MSH**: MSH is classified as a peptide hormone. This is relevant because the source of hormones can often be linked to their chemical nature.

3. **Identifying the Source**: The source of MSH is primarily the hypothalamus. It is secreted from the adenohypophysis, which is the anterior part of the pituitary gland.

...