The "Iodide Pump" Refers to the

Multiple Choice

The "iodide pump" refers to the

A) mechanism whereby target cells extract iodine-containing thyroid hormone from the blood
B) active transport mechanism that concentrates iodide ions in the thyroid
C) mechanism whereby T3 and T4 are released from thyroglobulin and pumped into the circulation
D) protein binding process whereby T3 and T4 are pumped throughout the body bound to plasma proteins
E) mechanism whereby ingested iodine is absorbed by the small intestine