10 Questions
Which of the following thyroid hormones is inactive until converted into its active form in the tissues?
T4
What is the primary mechanism by which TSH stimulates the activity of follicle cells?
↑ thyroglobulin breakdown
Which of the following conditions would most likely decrease the amount of binding protein in the plasma?
TBG deficiency
What is the primary role of thyroxine-binding proteins in the blood?
To carry T3 and T4 in the blood
Which of the following hormones exerts negative feedback on the hypothalamus?
T3 and T4
What is the effect of T3 on metabolic rate?
It increases metabolic rate
Which of the following drugs would most likely affect the binding of thyroxine to its protein transporter?
Glucocorticoids
What is the primary mechanism by which TRH regulates thyroid hormone production?
It regulates the release of TSH from the anterior pituitary
Which of the following is a characteristic of Hashimoto's thyroiditis?
Underproduction of T3 and T4
What is the primary purpose of thyroid function tests?
To assess thyroid hormone production and diagnose thyroid dysfunction
Assess your knowledge of thyroid hormone's role in growth and development, energy balance, muscle and adipose tissue distribution, sexual development, immune system function, and fluid and electrolyte balance. Review the effects of thyroid hormone on the human body.
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