TH (T3 and T4) are synthesized and released by the thyroid g…
TH (T3 and T4) are synthesized and released by the thyroid glands in response to stimulation by the hypothalamus. There hormones are chemically classified as _______________ chemical messengers. Receptors for TH are found in the _______________ of target cells. Target cell response to thyroid hormone is ___________ and ______________.