What happens to most of the secreted T₄?

Question

Quizplus · Accepted Answer

T₄, also known as thyroxine (T4), is converted into the more biologically active form of thyroid hormone, T₃, also known as triiodothyronine (T3), by peripheral tissues. This process involves the removal of one of the I atoms from the T4 molecule, resulting in the formation of T₃. Thus, most of the secreted T₄ is converted into T₃ rather than being phagocytized, becoming biologically active, or split to form DIT molecules. Option B is the best choice because it accurately describes the fate of most secreted T4 molecules.

What Happens to Most of the Secreted T4

What Happens to Most of the Secreted T₄