Question

thyroid hormone synthesis
what element is necessary for the production of triiodothyronine (t3) and thyroxine (t4)?

• calcium
• magnesium
• iodine
• potassium

Explanation:

Triiodothyronine (T3) and thyroxine (T4) are thyroid hormones. The synthesis of these hormones requires iodine. Iodine is taken up by the thyroid gland and incorporated into the structure of T3 and T4. Calcium is important for bone health and muscle function, magnesium is involved in many enzymatic reactions, and potassium is crucial for nerve and muscle function, but none of these are directly necessary for the production of T3 and T4 like iodine is.

Answer:

Iodine