Isotopes of iodine attack which organ?

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Prepare for the Bioenvironmental Engineering Apprentice Block 7 - Ionizing Radiation Test. Utilize flashcards and multiple-choice questions, each complete with hints and explanations. Excel in your exam!

Multiple Choice

Isotopes of iodine attack which organ?

Explanation:
Iodine isotopes are taken up primarily by the thyroid because this gland actively traps iodide from the blood to make thyroid hormones. Thyroid follicular cells use a specialized transporter, the sodium-iodide symporter, to concentrate iodide. Once inside, iodine is incorporated into thyroglobulin and transformed into the hormones T3 and T4. Because of this precise uptake mechanism, radioactive iodine isotopes, like I-131, localize mainly in the thyroid and can be used for imaging or therapy. Other organs don’t actively accumulate iodine for hormone production, so they’re not the primary targets.

Iodine isotopes are taken up primarily by the thyroid because this gland actively traps iodide from the blood to make thyroid hormones. Thyroid follicular cells use a specialized transporter, the sodium-iodide symporter, to concentrate iodide. Once inside, iodine is incorporated into thyroglobulin and transformed into the hormones T3 and T4. Because of this precise uptake mechanism, radioactive iodine isotopes, like I-131, localize mainly in the thyroid and can be used for imaging or therapy. Other organs don’t actively accumulate iodine for hormone production, so they’re not the primary targets.

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