What Happens to Most of the Secreted T₄

Multiple Choice

What happens to most of the secreted T₄?

A) It is phagocytized by target tissues.
B) It is converted into T₃ after being peripherally stripped of one of its iodine atoms.
C) It is the major biologically active form of thyroid hormone at the cellular level.
D) It is split to form two DIT molecules, which are excreted in the urine.
E) It is permitted to exert its full biological effect as a result of epinephrine's permissive actions.