What Does the "Iodine Pump" Refer To

question 2

Multiple Choice

What does the "iodine pump" refer to?

• A) a mechanism whereby target cells extract iodine-containing thyroid hormone from the blood
• B) an active transport mechanism that concentrates iodine in the thyroid
• C) a mechanism whereby T3 and T4 are released from thyroglobulin and pumped into the circulation
• D) a protein-binding process whereby T3 and T4 are pumped throughout the body bound to plasma proteins

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