Metabolism of thyroid hormones 1. Uptake of iodide 2. Activation ofiodide(peroxidase) and iodination and coupling of tyrosine 3. Formation of thyroxine(t4)and triiodothyronine (l3) from iodotyrosine 4. Secretion of thyroidhormone (proteolytic enzymes) 5. Regulation by thyroidstimulating hormone( Tsai, T4, T3 of thyMetabolism of thyroid hormones 1. Uptake of iodide 2. Activation of iodide (peroxidase), and iodination and coupling of tyrosine 3. Formation of thyroxine (T4 ) and triiodothyronine (T3 ) from iodotyrosine 4. Secretion of thyroid hormones (proteolytic enzymes) 5. Regulation by thyroid stimulating hormone (TSH),T4 , T3