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Thyroglobulin Synthesis and Iodide Pump Quiz
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Thyroglobulin Synthesis and Iodide Pump Quiz

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Questions and Answers

What is the primary function of thyroglobulin in the thyroid gland?

  • To transport iodide into the follicular cells
  • To be the precursor for the production of thyroid hormones (correct)
  • To catalyze the oxidation of iodide to iodine
  • To serve as a structural component of the thyroid follicles
  • What is the role of the iodide pump or sodium-iodide cotransporter in the thyroid gland?

  • To transport sodium ions into the follicular cells
  • To convert iodide to iodine in the follicular cells
  • To secrete thyroglobulin into the follicular lumen
  • To actively transport iodide into the follicular cells (correct)
  • What is the role of thyroid peroxidase in the thyroid gland?

  • To transport thyroglobulin into the follicular lumen
  • To synthesize thyroglobulin in the follicular cells
  • To actively transport sodium ions into the follicular cells
  • To catalyze the oxidation of iodide to iodine (correct)
  • How is thyroglobulin secreted into the follicular lumen?

    <p>By exocytosis of secretory vesicles containing thyroglobulin</p> Signup and view all the answers

    What is the significance of the numerous tyrosine amino acids on each thyroglobulin molecule?

    <p>They are used as precursors for the production of thyroid hormones</p> Signup and view all the answers

    Which autoimmune condition is associated with circulating TSH receptor autoantibodies?

    <p>Graves disease</p> Signup and view all the answers

    What is the primary clinical state found in Graves disease?

    <p>Thyrotoxicosis</p> Signup and view all the answers

    What are thyroid stimulating immunoglobulins (TSI) in Graves disease?

    <p>Autoantibodies targeting TSH receptors</p> Signup and view all the answers

    Which condition is characterized by abnormal growths within the thyroid gland?

    <p>Toxic multinodular goiter</p> Signup and view all the answers

    What causes focal and/or diffuse hyperplasia of thyroid follicular cells leading to hyperthyroidism?

    <p>Antithyroid antibodies</p> Signup and view all the answers

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