Podcast
Questions and Answers
What regulates circulating levels of calcium?
What regulates circulating levels of calcium?
- Calcitonin (correct)
- Thyroid peroxidase
- Thyroglobulin
- Thyrotropin releasing hormone
Which enzyme is responsible for the oxidation and reaction of iodide in the thyroid gland?
Which enzyme is responsible for the oxidation and reaction of iodide in the thyroid gland?
- Thyrotropin releasing hormone
- Thyroglobulin
- Thyroxine
- Thyroid peroxidase (correct)
What is the function of thyrotropin releasing hormone (TRH) on thyroid hormone secretion?
What is the function of thyrotropin releasing hormone (TRH) on thyroid hormone secretion?
- Stimulates thyroid hormone secretion (correct)
- Triggers negative feedback control
- Inhibits thyroid hormone secretion
- Enhances calcitonin production
What is the role of high circulating levels of thyroid hormones in the feedback control mechanism?
What is the role of high circulating levels of thyroid hormones in the feedback control mechanism?
What is the primary protein that most of the circulating T4 binds to?
What is the primary protein that most of the circulating T4 binds to?
Which protein has the shortest half-life among TBG, transthyretin, and albumin?
Which protein has the shortest half-life among TBG, transthyretin, and albumin?
What percentage of the circulating T4 is converted to T3 in adult humans?
What percentage of the circulating T4 is converted to T3 in adult humans?
Which organ does not play a role in deiodinating T4 and T3?
Which organ does not play a role in deiodinating T4 and T3?
What is a cause of congenital hypothyroidism according to the text?
What is a cause of congenital hypothyroidism according to the text?
How do drugs inhibit thyroid function according to the text?
How do drugs inhibit thyroid function according to the text?
What happens when dietary iodine intake falls below 50 μg/day according to the text?
What happens when dietary iodine intake falls below 50 μg/day according to the text?
How are hypothyroidism and goiter related according to the text?
How are hypothyroidism and goiter related according to the text?
Which of the following compounds inhibit the iodination of monoiodotyrosine and block the coupling reaction in hyperthyroidism?
Which of the following compounds inhibit the iodination of monoiodotyrosine and block the coupling reaction in hyperthyroidism?
Which medication inhibits the conversion of T4 to T3 in many extrathyroidal tissues?
Which medication inhibits the conversion of T4 to T3 in many extrathyroidal tissues?
What is the primary cause of hyperthyroidism in Hashimoto thyroiditis during the early stage?
What is the primary cause of hyperthyroidism in Hashimoto thyroiditis during the early stage?
How does radioactive iodine help in treating severe cases of hyperthyroidism?
How does radioactive iodine help in treating severe cases of hyperthyroidism?
What is the function of calcitonin secreted by the thyroid gland?
What is the function of calcitonin secreted by the thyroid gland?
How is thyroglobulin synthesized and secreted in the thyroid gland?
How is thyroglobulin synthesized and secreted in the thyroid gland?
What enzyme mediates the oxidation and reaction of iodide with thyroglobulin in the thyroid gland?
What enzyme mediates the oxidation and reaction of iodide with thyroglobulin in the thyroid gland?
How long can humans go without dietary iodide before a decline in circulating thyroid hormone levels is observed?
How long can humans go without dietary iodide before a decline in circulating thyroid hormone levels is observed?
Which plasma protein has the smallest capacity to bind T4 among albumin, transthyretin, and TBG?
Which plasma protein has the smallest capacity to bind T4 among albumin, transthyretin, and TBG?
What is the approximate daily secretion of T3 by the human thyroid?
What is the approximate daily secretion of T3 by the human thyroid?
In normal adult humans, what is the approximate plasma T3 level in μg/dL?
In normal adult humans, what is the approximate plasma T3 level in μg/dL?
Which thyroid hormone is relatively lipophilic and has a larger pool of protein-bound forms in plasma and tissues?
Which thyroid hormone is relatively lipophilic and has a larger pool of protein-bound forms in plasma and tissues?
What is the initial product formed during thyroid hormone synthesis?
What is the initial product formed during thyroid hormone synthesis?
Which enzyme is responsible for generating reactive iodine species in the thyroid gland?
Which enzyme is responsible for generating reactive iodine species in the thyroid gland?
How is T3 formed in the thyroid gland?
How is T3 formed in the thyroid gland?
What is the approximate percentage distribution of iodinated compounds in the normal human thyroid?
What is the approximate percentage distribution of iodinated compounds in the normal human thyroid?
What is the recommended treatment for iodide deficiency?
What is the recommended treatment for iodide deficiency?
Which of the following symptoms is NOT characteristic of hyperthyroidism?
Which of the following symptoms is NOT characteristic of hyperthyroidism?
How does hypothyroidism in the mother affect mental deficiency in offspring?
How does hypothyroidism in the mother affect mental deficiency in offspring?
What is the primary mechanism for treating congenital hypothyroidism soon after birth?
What is the primary mechanism for treating congenital hypothyroidism soon after birth?
