Hormone controlling metabolism is

Options

A. ACTH from pituitary
B. FSH from pituitary
C. Thyroxine from thyroid
D. Adrenaline from adrenal medulla.

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the hormone that controls metabolism.

2. **Recall Relevant Hormones**: Think about hormones that are known to influence metabolic processes. One of the primary hormones associated with metabolism is thyroxine.

3. **Define Thyroxine**: Thyroxine (T4) is a hormone produced by the thyroid gland. It plays a crucial role in regulating metabolism in the body.

4. **Understand the Role of Thyroxine**: Thyroxine is responsible for controlling the metabolism of carbohydrates, fats, and proteins. It influences how the body uses energy and contributes to growth and tissue differentiation.

5. **Link to TSH**: Thyroxine is released under the influence of Thyroid Stimulating Hormone (TSH), which is produced by the pituitary gland. TSH stimulates the thyroid gland to produce and release thyroxine.

6. **Evaluate Other Hormones**:
- ACTH (Adrenocorticotropic hormone) primarily stimulates the production of cortisol, which is not directly related to metabolism.
- FSH (Follicle Stimulating Hormone) is involved in reproductive processes, not metabolism.
- Adrenaline (epinephrine) is involved in the fight-or-flight response and does not primarily control metabolism.

7. **Conclusion**: Based on the information, the hormone that controls metabolism is **Thyroxine**.

**Final Answer**: Thyroxine (T4) is the hormone controlling metabolism.

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