Radiation Safety Practice Exam

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Study for the Radiation Safety Exam. Test your knowledge with multiple choice questions, each equipped with hints and explanations. Prepare effectively and confidently!

Practice this question and more.

Where does iodine tend to accumulate in the body?

Kidneys
Thyroid glands
Liver
Bone marrow

The correct answer is: Thyroid glands

Iodine tends to accumulate primarily in the thyroid glands because the thyroid uses iodine to produce vital hormones, particularly thyroxine (T4) and triiodothyronine (T3). These hormones are crucial for regulating metabolism, growth, and development in the body. The thyroid actively transports iodine from the bloodstream to incorporate it into these hormones, which is why it is the main organ for iodine accumulation. In everyday life, adequate iodine intake is essential for maintaining proper thyroid function and preventing disorders such as goiter and hypothyroidism. While iodine can interact with other organs in the body, such as the kidneys, liver, and bone marrow, it does not accumulate in significant amounts there as it does in the thyroid. Therefore, the thyroid is the critical site of iodine concentration and usage, making it the correct choice in this context.