Chapter 45: Q45-6TYU. (page 1016)
Which of the following is the most likely explanation for hypothyroidism in a patient whose iodine level is normal?
(A) greater production of T3 than of T4
(B) hyposecretion of TSH
(C) hypersecretion of MSH
(D) a decrease in the thyroid secretion of calcitonin
Short Answer
(A) The statement "greater production of T3 than of T4鈥 is false.
(B) The statement "hyposecretion of TSH" is true.
(C) The statement "hypersecretion of MSH鈥 is false.
(D) The statement "a decrease in the thyroid secretion of calcitonin鈥 is false.