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Questions and Answers
What is the main storage of the thyroid hormones within the thyroid gland?
What is the main storage of the thyroid hormones within the thyroid gland?
- Follicular cells
- Colloid (correct)
- Glandular cells
- Thyroglobulin
Where are the thyroid glands located in most mammals?
Where are the thyroid glands located in most mammals?
- Caudal to the esophagus
- Cranial to the esophagus
- Caudal to the trachea at the level of the first or second tracheal ring (correct)
- Cranial to the trachea
Which of the following is NOT a function of the thyroid hormones?
Which of the following is NOT a function of the thyroid hormones?
- Regulating body temperature (correct)
- Promoting growth and development
- Regulating blood calcium levels
- Regulating metabolic rate
What is the half-life of thyroxine?
What is the half-life of thyroxine?
Which type of cells in the thyroid gland synthesize the thyroid hormones?
Which type of cells in the thyroid gland synthesize the thyroid hormones?
Which of the following is NOT a type of amine hormone?
Which of the following is NOT a type of amine hormone?
Which of the following is NOT a physiological action of thyroid hormones?
Which of the following is NOT a physiological action of thyroid hormones?
What is the minimal rate of energy expenditure per unit time at rest called?
What is the minimal rate of energy expenditure per unit time at rest called?
Which of the following is NOT a metabolic effect of thyroid hormones?
Which of the following is NOT a metabolic effect of thyroid hormones?
What is the main cause of hyperthyroidism in cats?
What is the main cause of hyperthyroidism in cats?
What is the main symptom of hypothyroidism in dogs?
What is the main symptom of hypothyroidism in dogs?
What is the primary cause of hypothyroidism in dogs?
What is the primary cause of hypothyroidism in dogs?
What is the major substrate that combines with iodine to form thyroid hormones?
What is the major substrate that combines with iodine to form thyroid hormones?
Where does iodine come from in the thyroid hormone synthesis process?
Where does iodine come from in the thyroid hormone synthesis process?
Which cells secrete calcitonin?
Which cells secrete calcitonin?
How do thyroid follicle cells trap iodide?
How do thyroid follicle cells trap iodide?
What is the intracellular concentration of iodide compared to the extracellular concentration in the thyroid follicle cells?
What is the intracellular concentration of iodide compared to the extracellular concentration in the thyroid follicle cells?
What enzyme is responsible for the synthesis of thyroid hormones in the thyroid follicle lumen?
What enzyme is responsible for the synthesis of thyroid hormones in the thyroid follicle lumen?
Which of the following is the correct sequence of events in the production of thyroid hormones?
Which of the following is the correct sequence of events in the production of thyroid hormones?
What is the result of the fusion of two iodinated tyrosines?
What is the result of the fusion of two iodinated tyrosines?
What is the major hormone produced by the follicular cells?
What is the major hormone produced by the follicular cells?
Where are T3 and T4 stored before secretion?
Where are T3 and T4 stored before secretion?
How are thyroid hormones transported in the blood?
How are thyroid hormones transported in the blood?
What is the primary function of thyroid hormones?
What is the primary function of thyroid hormones?
Which gland typically enlarges due to iodine deficiency?
Which gland typically enlarges due to iodine deficiency?
What are the compounds that interfere with iodine uptake by the thyroid gland or with normal synthesis of thyroid hormones called?
What are the compounds that interfere with iodine uptake by the thyroid gland or with normal synthesis of thyroid hormones called?
Which tests can be used for the diagnosis of endocrine disorders?
Which tests can be used for the diagnosis of endocrine disorders?
Which hormone suppression test is used to evaluate thyroid function?
Which hormone suppression test is used to evaluate thyroid function?
Which of the following is NOT a factor that can lead to iodine deficiency?
Which of the following is NOT a factor that can lead to iodine deficiency?
What is the role of goitrogens in the development of goiter?
What is the role of goitrogens in the development of goiter?
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