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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?

The thyroid makes more thyroid hormones than it needs Signup and view all the answers

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

T4 Signup and view all the answers

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

$T4$ Signup and view all the answers

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

Activating the thyroid epithelial cell to release T3 and T4 Signup and view all the answers

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

It blunts the synthesis and secretion of serum TSH 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?

Thiocyanate Signup and view all the answers

How does smoking affect hyperthyroidism?

Smoking worsens symptoms of hyperthyroidism Signup and view all the answers

How does iodine deficiency affect hypothyroidism?

Iodine deficiency leads to increased excretion of iodine and inhibits thyroid hormone synthesis Signup and view all the answers

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

TRH stimulates the production of T3 and T4 Signup and view all the answers

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

They blunt the synthesis and secretion of serum TSH Signup and view all the answers

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

It competes with iodide in the organification process and inhibits thyroid hormone synthesis Signup and view all the answers

How does diet play a role in managing hypothyroidism?

Iodine-containing diet is recommended specially in iodine-deficient areas for hypothyroidism management Signup and view all the answers