Thyroid Disorders and Causes Quiz
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Questions and Answers

What is a single overactive nodule in the thyroid called?

  • Thyroiditis
  • Toxic multi-nodular goiter
  • Excessive iodine
  • Toxic autonomously functioning thyroid nodule (correct)

Which disorder can be either painful or not felt at all?

  • Excessive iodine
  • Thyroiditis (correct)
  • Overactive thyroid nodule
  • Toxic multi-nodular goiter

Where is T3 also produced, besides the thyroid?

  • Pituitary and liver
  • Heart and kidney
  • Pituitary and heart
  • Liver and kidney (correct)

What happens when the thyroid has too much iodine?

<p>The thyroid makes more thyroid hormones than it needs (A)</p> Signup and view all the answers

Which hormone is considered to be more of a pro-hormone?

<p>T4 (B)</p> Signup and view all the answers

What influences basal metabolic processes and enhances oxygen consumption in nearly all body tissues?

<p>$T4$ (C)</p> Signup and view all the answers

What is the primary function of TSH (thyroid stimulating hormone) in the endocrine system?

<p>Activating the thyroid epithelial cell to release T3 and T4 (D)</p> Signup and view all the answers

What is the influence of negative feedback from thyroid hormone predominantly T3 on the secretion of TSH?

<p>It blunts the synthesis and secretion of serum TSH (A)</p> Signup and view all the answers

Which hormone competes with iodide in the organification process, inhibits thyroid hormone synthesis, and is a major component of smoke?

<p>Thiocyanate (B)</p> Signup and view all the answers

How does smoking affect hyperthyroidism?

<p>Smoking worsens symptoms of hyperthyroidism (B)</p> Signup and view all the answers

How does iodine deficiency affect hypothyroidism?

<p>Iodine deficiency leads to increased excretion of iodine and inhibits thyroid hormone synthesis (C)</p> Signup and view all the answers

What is the role of TRH (thyrotropin-releasing hormone) in regulating the secretion of TSH?

<p>TRH stimulates the production of T3 and T4 (C)</p> Signup and view all the answers

How does elevated circulating thyroid hormone levels affect the synthesis and secretion of serum TSH?

<p>They blunt the synthesis and secretion of serum TSH (C)</p> Signup and view all the answers

What is the primary function of thiocyanate in relation to thyroid function?

<p>It competes with iodide in the organification process and inhibits thyroid hormone synthesis (B)</p> Signup and view all the answers

How does diet play a role in managing hypothyroidism?

<p>Iodine-containing diet is recommended specially in iodine-deficient areas for hypothyroidism management (D)</p> Signup and view all the answers

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