Adrenocorticotropic hormone is secreted by

Options

A. thyroid
B. Adrenal cortex
C. pancreas
D. anterior pituitary.

Explanation

**Step-by-Step Solution:**

1. **Identify the Hormone**: The question asks about the secretion of Adrenocorticotropic hormone, commonly known as ACTH.

2. **Understand the Function of ACTH**: ACTH is a tropic hormone, meaning it stimulates other endocrine glands rather than directly affecting target cells. Specifically, it signals the adrenal cortex to release cortisol.

3. **Review the Options**: The options provided are:
- 1st: Thyroid
- 2nd: Adrenal Cortex
- 3rd: Pancreas
- 4th: Anterior Pituitary

4. **Analyze Each Option**:
- **Thyroid**: This gland releases thyroid hormones (like T3 and T4) but is stimulated by Thyroid Stimulating Hormone (TSH) from the pituitary, not ACTH.
- **Adrenal Cortex**: This gland releases cortisol but is the target of ACTH, not the source of it.
- **Pancreas**: This gland primarily releases insulin and does not secrete ACTH.
- **Anterior Pituitary**: This gland produces and secretes ACTH, along with other hormones like TSH.

5. **Conclusion**: Since ACTH is produced in the anterior pituitary, the correct answer is option 4: Anterior Pituitary.

**Final Answer**: Adrenocorticotropic hormone (ACTH) is secreted by the anterior pituitary.

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