Which halogen element is necessary for the making of thyroxine hormone by the thyroid gland?

Options

A. Magnesium
B. Iodine
C. Calcium
D. Iron

Answer

**Step-by-Step Solution:**

1. **Identify the Question:** The question asks which halogen element is necessary for the production of the thyroxine hormone by the thyroid gland.

2. **Analyze the Options:** The options provided are Magnesium, Iodine, Calcium, and Iron. Among these, we need to identify which one is a halogen.

3. **Understand Halogens:** Halogens are a group of elements found in Group 17 of the periodic table. The common halogens include Fluorine, Chlorine, Bromine, Iodine, and Astatine.

4. **Determine the Role of Iodine:** Iodine is the only halogen among the options given. It is essential for the synthesis of thyroxine (T4), which is a hormone produced by the thyroid gland.

5. **Explain the Thyroxine Production Process:**
- The hypothalamus releases Thyrotropin-Releasing Hormone (TRH).
- TRH stimulates the anterior pituitary gland to release Thyroid-Stimulating Hormone (TSH).
- TSH then acts on the thyroid gland, stimulating it to absorb iodine and synthesize thyroxine.

6. **Conclude the Answer:** Based on the analysis, the halogen element necessary for the making of the thyroxine hormone is **Iodine**.

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