TSH stimulates thyroid function in many ways, but it does NOT increase
A) iodination of tyrosine
B) iodine uptake from the blood
C) rate of synthesis of thyroglobulin
D) synthesis of thyroxine binding globulin

Question

Quizplus · Accepted Answer

TSH stimulates the synthesis of thyroxine (T4) and triiodothyronine (T3) by activating the iodination of tyrosine residues on thyroglobulin, increasing the uptake of iodine from the blood, and increasing the rate of synthesis of thyroglobulin. However, it does not directly stimulate the synthesis of thyroxine binding globulin (TBG), which is produced by the liver in response to thyroid hormone levels.

TSH Stimulates Thyroid Function in Many Ways, but It Does