The release of thyrotropin-releasing hormone (TRH) from the…
The release of thyrotropin-releasing hormone (TRH) from the hypothalamus stimulates thyrotropin release (TSH) from the pituitary, which further leads to synthesis and secretion of thyroid hormone (T4 & T3) from the thyroid gland. When the concentration of thyroid hormone in the blood turns off the release of thyrotropin from the pituitary, this is referred to as what type of feedback?